Ingredient Glossary | DermalGuide

What the blind-buy ratings mean

Extremely safeYour skin barrier won’t fight you on this. (1,768 ingredients)
Probably fineMost skin shrugs this off, but if yours is sensitive or reactive, skim the full ingredient list before you click. (254 ingredients)
Proceed with cautionUse your brain, patch-test first, or prepare to look like a cooked lobster for a day. (115 ingredients)

Ratings are a general guide to how often an ingredient bothers skin, not medical advice. Anyone can react to anything, so patch-test new products, and talk to a dermatologist about a skin condition or a reaction.

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(CI 77491, CI 77492, CI 77499): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
[+/- (May Contain) Iron Oxides (CI 77489, CI 77491, CI 77492, CI 77499), Chromium Oxide Greens (CI 77288)]: Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
[+/- Titanium Dioxide (CI 77891),Iron Oxides (CI 77492),Iron Oxides (CI 77491),Iron Oxides (CI 77499)].: Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
[+/-: CI 77002, CI 77491, CI77492, CI 77891]: Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
+/- CI 77891: Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
1,2-Hexanediol: Extremely safe In 153 products; The K-beauty multitasker: half moisturizer, half preservative, zero personality, total reliability.; Also listed as: 1-2 Hexanediol; 1, 2-HEXANEDIOL; 1,2- Hexanediol
2-Hexanediol: Extremely safe In 18 products; A humectant glycol. Pulls water into your skin and keeps the formula smooth — the reliable roommate who always pays rent on time.; Also listed as: 2 Hexanediol
2,3-Butanediol: Extremely safe In 1 product; The solvent that helps the good stuff dissolve and sink in. Unglamorous, essential, criminally underrated.
2,6-Dimethyl-7-Octen-2-Ol: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
3-0-Ethyl Ascorbic Acid: Probably fine In 1 product; The stable, modern vitamin C with a lab-coat name. Brightens without most of the tantrums of the pure stuff.
3-0-ETHYLASCORBIC ACID: Probably fine In 1 product; The stable, modern vitamin C with a lab-coat name. Brightens without most of the tantrums of the pure stuff.
3-Butanediol: Extremely safe In 1 product; The solvent that helps the good stuff dissolve and sink in. Unglamorous, essential, criminally underrated.
3-O-Ethyl Ascorbic Acid: Probably fine In 15 products; The stable, modern vitamin C with a lab-coat name. Brightens without most of the tantrums of the pure stuff.
4-T-Butylcyclohexanol: Extremely safe In 2 products; An antioxidant multivitamin. Not flashy, never trending, quietly cleaning up pollution damage like a city sanitation worker.
4-Terpineol: Proceed with caution In 2 products; The perfume counter's favorite troublemaker. Gorgeous smell, known contact allergen, especially once it oxidizes.
7-dehydrocholesterol: Extremely safe In 1 product; The bricklayer of your skin barrier. Shows up, fills the cracks, goes home. No hype, just walls.
10-Decanediol: Extremely safe In 1 product; The behind-the-scenes stagehand. Keeps the formula slippery, hydrating, and preserved. You'll never notice it, which is the point.
10-Hydroxydecanoic Acid: Extremely safe In 1 product; One of the fats your skin already makes. Showing up here feels like a family reunion.

A

A lpinia Officinarum Leaf Extract: Probably fine In 1 product; An obscure botanical with a Latin name longer than a CVS receipt. Probably here to sound fancy; probably fine; plants do occasionally pick fights.
Abies Sibirica Oil: Probably fine In 7 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Acacia Decurrens (Mimosa) Flower Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Acacia Decurrens Extract: Extremely safe In 4 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Acacia Decurrens Flower Cera: Extremely safe In 1 product; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.
Acacia Decurrens Flower Wax: Extremely safe In 3 products; An occlusive seal. Basically shrink-wrap for hydration.
Acacia Senegal Gum: Extremely safe In 7 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Acacia Senegal Gum Extract: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
ACANTHOPANAX SENTICOSUS (ELEUTHERO) ROOT EXTRACT: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Acer Rubrum Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
ACER SACCHARUM (SUGAR MAPLE) EXTRACT: Extremely safe In 1 product; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
Acetamidoethoxyethanol: Extremely safe In 1 product; A humectant that grabs water from the air and parks it in your skin. Like a dehumidifier, but in reverse and flattering.
Acetic Acid: Extremely safe In 5 products; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Acetyl Carnitine HCL: Extremely safe In 1 product; A longevity-lab ingredient. Sounds like it belongs in a biohacker podcast, behaves like a gentle pep talk.
Acetyl Glucosamine: Extremely safe In 12 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Acetyl Glutamine: Extremely safe In 1 product; An amino acid — a Lego brick your skin uses to build its own moisture factor.
ACETYL HEPTAPEPTIDE-4: Extremely safe In 12 products; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
Acetyl Hexapeptide-1: Extremely safe In 3 products; A tiny text message to your skin cells that says 'please make more collagen.' Sometimes they read it. Results arrive on dial-up.
Acetyl Hexapeptide-8: Extremely safe In 30 products; The 'Botox in a jar' peptide. Politely asks your forehead muscles to relax. Your forehead politely considers it.
Acetyl Hexapeptide-37: Extremely safe In 1 product; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
Acetyl Methionine: Extremely safe In 1 product; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
ACETYL OCTAPEPTIDE-3: Extremely safe In 13 products; A tiny text message to your skin cells that says 'please make more collagen.' Sometimes they read it. Results arrive on dial-up.
Acetyl sh-Hexapeptide-5 Amide Acetate: Extremely safe In 1 product; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
Acetyl Tetrapeptide-2: Extremely safe In 6 products; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
Acetyl Tetrapeptide-5: Extremely safe In 6 products; A tiny text message to your skin cells that says 'please make more collagen.' Sometimes they read it. Results arrive on dial-up.
Acetyl Tetrapeptide-9: Extremely safe In 7 products; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
ACETYL TETRAPEPTIDE-11: Extremely safe In 16 products; A tiny text message to your skin cells that says 'please make more collagen.' Sometimes they read it. Results arrive on dial-up.
Acetyl Tetrapeptide-59 Amido Ethoxyethoxyacetyl Dipeptide-67: Extremely safe In 1 product; A tiny text message to your skin cells that says 'please make more collagen.' Sometimes they read it. Results arrive on dial-up.
Acetyl Zingerone: Extremely safe In 1 product; A longevity-lab ingredient. Sounds like it belongs in a biohacker podcast, behaves like a gentle pep talk.
Acetylated Glycol Stearate: Extremely safe In 2 products; A humectant glycol. Pulls water into your skin and keeps the formula smooth — the reliable roommate who always pays rent on time.
Achillea Millefolium Extract: Probably fine In 2 products; The daisy-family soother. Calms most people down instantly — unless you're one of the few who sneeze at ragweed, in which case it's a frenemy.
Acmella Oleracea Extract: Probably fine In 3 products; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.
Acrylamide / Sodium Acryloyldimethyltaurate Copolymer: Extremely safe In 2 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.; Also listed as: Acrylamide/Sodium Acryloyldimethyltaurate Copolymer
Acrylates Copoly- mer: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Acrylates Copolymer: Extremely safe In 13 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Acrylates/ Dimethylaminoethyl Methacrylate Copolymer: Extremely safe In 1 product; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Acrylates/Ammonium Methacrylate Copolymer: Extremely safe In 2 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Acrylates/Beheneth-25 Methacrylate Copolymer: Extremely safe In 6 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Acrylates/C10-30 Alkyl Acrylate Crosspolymer: Extremely safe In 37 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Acrylates/C1030 Alkyl Acrylate Crosspolymer: Extremely safe In 1 product; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Acrylates/Dimethicone Copolymer: Extremely safe In 4 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
ACRYLATES/POLYTRIMETHYLSILOXYMETHACRYLATE COPOLYMER: Extremely safe In 2 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
acrylates/stearyl acrylate/dimethicone methacrylate copolymer: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Acrylates/Stearyl Methacrylate Copolymer: Extremely safe In 3 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride: Extremely safe In 1 product; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride Copolymer: Extremely safe In 2 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Actinidia Chinensis (Kiwi) Fruit Extract: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Acyl Coenzyme A Desaturase: Extremely safe In 1 product; Cellular energy-drink energy. Promises your tired skin a second wind, minus the jitters.
Adansonia Digitata Seed Oil: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Adenium Obesum Leaf Cell Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Adenosine: Extremely safe In 37 products; The quiet wrinkle-smoother that Korean skincare has been sneaking into everything for a decade. Low drama, long game.
Adipic Acid/Neopentyl Glycol Crosspolymer: Extremely safe In 2 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Aesculus Hippocastanum (Horse Chestnut) Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
AESCULUS HIPPOCASTANUM (HORSE CHESTNUT) SEED EXTRACT: Extremely safe In 3 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Agar: Extremely safe In 5 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Agave Tequilana Leaf Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Alanine: Extremely safe In 8 products; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Albizia Julibrissin Bark Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Alchemilla Vulgaris Extract: Extremely safe In 2 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Alchemilla Vulgaris Leaf Extract: Extremely safe In 2 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Alcohol: Proceed with caution In 21 products; Hand-sanitizer energy. Evaporates fast, feels clean, and can leave dry skin feeling like crepe paper.; Also listed as: Alcohol**; Alcohol.
Alcohol *INGREDIENTS FROM ORGANIC FARMING: Proceed with caution In 1 product; Hand-sanitizer energy. Evaporates fast, feels clean, and can leave dry skin feeling like crepe paper.
Alcohol Denat.: Proceed with caution In 14 products; The quick-dry party guest. Makes products feel light and fresh, then leaves with your skin's moisture in its pocket.
Alcohol Denatured: Proceed with caution In 2 products; The quick-dry party guest. Makes products feel light and fresh, then leaves with your skin's moisture in its pocket.
Alcohol** *INGREDIENTS FROM ORGANIC FARMING ** MADE USING ORGANIC INGREDIENTS: Proceed with caution In 1 product; Hand-sanitizer energy. Evaporates fast, feels clean, and can leave dry skin feeling like crepe paper.
Aleurites Moluccana Seed Oil: Extremely safe In 2 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Aleurites Moluccanus Seed Oil: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Algae Extract: Extremely safe In 3 products; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Algae Extract. [+/-] Chromium Oxide Greens (CI 77288): Extremely safe In 1 product; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Algae Extract. [+/-] Mica: Extremely safe In 1 product; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Algae Oligosaccharides: Extremely safe In 2 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Algin: Extremely safe In 10 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Allantoin: Extremely safe In 74 products; The quiet nurse in the back of the formula. Soothes, softens, and never asks for credit.
Allium Sativum (Garlic) Bulb Extract: Probably fine In 1 product; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.
Aloe Barbadensis (Aloe Vera) Leaf Extract: Extremely safe In 2 products; Aloe: the cactus-looking plant with the heart of a cucumber. Cools, soothes, asks for nothing.
Aloe Barbadensis (Aloe Vera) Leaf Juice: Extremely safe In 1 product; Aloe: the cactus-looking plant with the heart of a cucumber. Cools, soothes, asks for nothing.
Aloe Barbadensis Extract: Extremely safe In 1 product; Aloe: the cactus-looking plant with the heart of a cucumber. Cools, soothes, asks for nothing.
Aloe Barbadensis Flower Extract: Extremely safe In 1 product; Sunburn's best friend. A cool gel hug from a spiky desert plant that turned out to be a softie.
Aloe Barbadensis Leaf: Extremely safe In 1 product; Sunburn's best friend. A cool gel hug from a spiky desert plant that turned out to be a softie.
Aloe Barbadensis Leaf Extract: Extremely safe In 6 products; Sunburn's best friend. A cool gel hug from a spiky desert plant that turned out to be a softie.
Aloe Barbadensis Leaf Juice: Extremely safe In 10 products; Bottled after-sun relief. Basically a cold glass of water for an overheated face.
Aloe Barbadensis Leaf Juice Powder*: Extremely safe In 4 products; Aloe: the cactus-looking plant with the heart of a cucumber. Cools, soothes, asks for nothing.
Aloe Barbadensis Leaf Water: Extremely safe In 1 product; Aloe: the cactus-looking plant with the heart of a cucumber. Cools, soothes, asks for nothing.
Aloe Ferox Leaf Extract: Extremely safe In 1 product; Aloe: the cactus-looking plant with the heart of a cucumber. Cools, soothes, asks for nothing.
Aloe Vera Barbadensis Leaf Juice: Extremely safe In 2 products; Aloe: the cactus-looking plant with the heart of a cucumber. Cools, soothes, asks for nothing.
Alpha-Arbutin: Extremely safe In 6 products; Hydroquinone's well-behaved stepsister. Fades dark spots slowly and politely, no scandal attached.
Alpha-Arbutin(2%): Extremely safe In 1 product; Hydroquinone's well-behaved stepsister. Fades dark spots slowly and politely, no scandal attached.
Alpha-Glucan Oligosaccharide: Extremely safe In 6 products; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
Alpha-Isomethyl Ionone: Proceed with caution In 12 products; A scent molecule that's legally required to be called out on EU labels for a reason. Smells pretty; picks fights with sensitive skin.
Alpinia Officinarum Leaf Extract: Probably fine In 1 product; A mystery plant extract. Likely harmless, possibly soothing, definitely makes the label look like a botany exam.
Alteromonas Ferment Extract: Extremely safe In 2 products; The kombucha of skincare. Bacteria and yeast that ate something healthy and left behind a souvenir your skin happens to love.
Althaea Of- ficinalis Root Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Althaea Officinalis Root Extract: Extremely safe In 3 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Alumina: Extremely safe In 4 products; Mattifying dust. Swallows shine so you can survive a summer group photo.
Aluminum Dimyristate: Extremely safe In 1 product; Mattifying dust. Swallows shine so you can survive a summer group photo.
Aluminum Hydroxide: Extremely safe In 20 products; A soft-focus coating that keeps pigments and powders behaving. Background glue, nothing more.
Aluminum Hydroxide. May Contain Titanium Dioxide (CI 77891): Extremely safe In 1 product; A soft-focus coating that keeps pigments and powders behaving. Background glue, nothing more.
Aluminum Starch Octenylsuccinate: Extremely safe In 2 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Amber Powder: Extremely safe In 2 products; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.
Aminomethyl Propanol: Extremely safe In 16 products; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Aminopropyl Ascorbyl Phosphate: Probably fine In 6 products; A vitamin C derivative — the celebrity's stunt double. Does most of the brightening, way fewer tantrums.
Aminopropyl Trimethoxysilane: Extremely safe In 1 product; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
Ammonium Acrylates Copolymer: Extremely safe In 1 product; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer: Extremely safe In 9 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.; Also listed as: Ammonium Acryloyldimethyltaurate/ Beheneth-25 Methacrylate Crosspolymer
Ammonium Acryloyldimethyltaurate/VP Copolymer: Extremely safe In 25 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.; Also listed as: Ammonium Acryloyldimethyltaurate/ Vp Copolymer
AMMONIUM GLYCYRRHIZATE: Extremely safe In 3 products; The calming licorice compound. Redness's natural enemy, no black jellybeans required.
Ammonium Lauryl Sulfate: Probably fine In 3 products; Industrial-strength bubbles. Great at stripping grime, also great at stripping your patience if you have dry skin.
AMODIMETHICONE: Extremely safe In 1 product; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
amyl cinnamal: Proceed with caution In 5 products; One of the 'smells nice, may bite' crowd. A fragrance molecule on the official allergen watch list — lovely in a candle, dicey on a sensitive face.
Amylopectin: Extremely safe In 3 products; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
Amylopectin/Glycerin Crosspolymer: Extremely safe In 1 product; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Amylose: Extremely safe In 1 product; Basically candy chemistry repurposed for hydration. Wonka would approve.
Amyris Balsamifera Bark Oil: Probably fine In 6 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
and Octisalate (3.0%): Probably fine In 1 product; A chemical sunscreen filter: absorbs UV like a solar panel so your face doesn't have to. Can sting eyes when you sweat — still not an excuse to skip it.
Anetholea Anisata Leaf Extract: Probably fine In 1 product; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.
Angelica Archangelica Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
ANGELICA KEISKEI EXTRACT: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Anhydroxylitol: Extremely safe In 8 products; Sugar for your face, the zero-calorie kind. Pulls in moisture and makes everything feel a little sweeter.
Aniba Rosodora (Rosewood) Wood Oil: Probably fine In 10 products; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Annatto (CI 75120): Extremely safe In 1 product; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.
Annona Cherimola Fruit Extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Annuus (Sunflower) Seed Oil: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Anthemis Nobilis (Chamomile) Flower Oil: Probably fine In 2 products; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Anthemis Nobilis (Roman Chamomile) Flower Oil: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Anthemis Nobilis Flower Extract: Probably fine In 1 product; Flower-power calm from the daisy family. Lovely for most, a surprise allergy for the ragweed-sensitive.
Anthemis Nobilis Flower Oil: Probably fine In 12 products; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Aphanizomenon Flosaquae (Algae) Extract: Extremely safe In 1 product; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Apium Graveolens (Celery) Seed Extract: Probably fine In 1 product; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.
AQUA: Extremely safe In 3 products; Water. It's water. The most expensive tap water you'll ever buy, and the reason the bottle isn't a solid brick.
Aqua/Water: Extremely safe In 21 products; Water. It's water. The most expensive tap water you'll ever buy, and the reason the bottle isn't a solid brick.; Also listed as: Aqua (Water)
Aqua/Water/Eau: Extremely safe In 76 products; Water. It's water. The most expensive tap water you'll ever buy, and the reason the bottle isn't a solid brick.; Also listed as: AQUA / WATER / EAU; Aqua (Water, Eau)
Arachidic Acid: Extremely safe In 3 products; A fatty acid: a building block of your skin's own oil slick. Familiar face, good manners.
Arachidyl Alcohol: Extremely safe In 10 products; The 'good' alcohol. A waxy, creamy fatty alcohol — nothing like the drying stuff in toner, despite the identical last name.
Arachidyl Glucoside: Extremely safe In 10 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Arctium Majus Root Extract: Probably fine In 1 product; A mystery plant extract. Likely harmless, possibly soothing, definitely makes the label look like a botany exam.
Argania Spinosa Kernel Oil: Extremely safe In 10 products; Liquid gold from Moroccan argan trees (fun fact: goats climb those trees). Rich, glowy, and great for dry skin.
Arginine: Extremely safe In 30 products; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Arginine/Lysine Polypeptide: Extremely safe In 9 products; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.; Also listed as: Arginine/ Lysine Polypeptide
Arnica Montana Flower Extract: Probably fine In 6 products; Flower-power calm from the daisy family. Lovely for most, a surprise allergy for the ragweed-sensitive.
Aroma (Flavor): Proceed with caution In 1 product; The secret recipe nobody has to disclose. Makes the jar smell expensive; the #1 reason sensitive skin throws a tantrum.
Artemisia Capillaris Flower Extract: Extremely safe In 2 products; Mugwort: the K-beauty herb that calms angry skin. Sounds like a witch's potion ingredient, behaves like a lullaby.
Artocarpus Heterophyllus Fruit Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Ascorbic Acid: Proceed with caution In 10 products; Pure vitamin C: the high-maintenance celebrity of skincare. Makes you glow on camera, oxidizes if you look at it wrong, and stings like a paper cut in lemon juice.
Ascorbic Acid(13%): Proceed with caution In 1 product; Pure vitamin C: the high-maintenance celebrity of skincare. Makes you glow on camera, oxidizes if you look at it wrong, and stings like a paper cut in lemon juice.
Ascorbic Acid(23%): Proceed with caution In 1 product; Pure vitamin C: the high-maintenance celebrity of skincare. Makes you glow on camera, oxidizes if you look at it wrong, and stings like a paper cut in lemon juice.
Ascorbyl Glucoside: Probably fine In 3 products; A vitamin C derivative — the celebrity's stunt double. Does most of the brightening, way fewer tantrums.
Ascorbyl Methylsilanol Pectinate: Probably fine In 5 products; A vitamin C derivative — the celebrity's stunt double. Does most of the brightening, way fewer tantrums.
Ascorbyl Palmitate: Extremely safe In 27 products; The oil-soluble, low-drama vitamin C. Mostly here as an antioxidant bodyguard, not the headliner.
Ascorbyl Palmitate May Contain: Iron Oxides (CI 77491, CI 77492, CI 77499): Extremely safe In 1 product; The oil-soluble, low-drama vitamin C. Mostly here as an antioxidant bodyguard, not the headliner.
Ascorbyl Palmitate May Contain: Mica: Extremely safe In 2 products; The oil-soluble, low-drama vitamin C. Mostly here as an antioxidant bodyguard, not the headliner.
Ascorbyl Palmitate. [+/- (May Contain) Iron Oxides (Ci 77489, Ci 77491, Ci 77492, Ci 77499)]: Extremely safe In 1 product; The oil-soluble, low-drama vitamin C. Mostly here as an antioxidant bodyguard, not the headliner.
Ascorbyl Palmitate. [+/- (May Contain) Iron Oxides (CI 77491, CI 77492, CI 77499), Titanium Dioxide (CI 77891), Manganese Violet (CI 77742), Mica, Carmine (CI 75470)]: Extremely safe In 1 product; The oil-soluble, low-drama vitamin C. Mostly here as an antioxidant bodyguard, not the headliner.
Ascorbyl Palmitate. [+/- (May Contain) Titanium Dioxide (Ci 77891), Iron Oxides (Ci 77489, Ci 77491, Ci 77492, Ci 77499)]: Extremely safe In 1 product; The oil-soluble, low-drama vitamin C. Mostly here as an antioxidant bodyguard, not the headliner.
ASCORBYL TETRAISOPALMITATE: Probably fine In 6 products; Vitamin C in a disguise that keeps it stable. Slower glow-up, much less sting.
Asiatic Acid: Extremely safe In 13 products; Part of Centella's chill-out crew. Redness takes one look and decides to calm down.
Asiaticoside: Extremely safe In 13 products; Part of Centella's chill-out crew. Redness takes one look and decides to calm down.
Aspalathus Linearis Leaf Extract: Extremely safe In 1 product; Tea time for your face. Antioxidants that calm redness — no biscuits included, sadly.
Aspartic Acid: Extremely safe In 4 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Aspergillus Ferment: Extremely safe In 2 products; The kombucha of skincare. Bacteria and yeast that ate something healthy and left behind a souvenir your skin happens to love.
Astragalus Membranaceus Root Extract: Extremely safe In 4 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Astrocaryum Murumuru Seed Butter: Extremely safe In 2 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Aureobasidium Pullulans Ferment: Extremely safe In 1 product; Basically candy chemistry repurposed for hydration. Wonka would approve.
Avena Sativa (Oat) Bran Extract: Extremely safe In 2 products; Oat power: the gentlest itch-fighter in the pantry. Soothing, humble, slightly porridge-adjacent.
Avena Sativa (Oat) Kernel Extract: Extremely safe In 16 products; Oat power: the gentlest itch-fighter in the pantry. Soothing, humble, slightly porridge-adjacent.
Avena Sativa (Oat) Kernel Oil: Extremely safe In 3 products; Breakfast for your face. The same oats your grandmother put in an itchy-kid bath, now in a fancy bottle.
Avena Sativa (Oat) Leaf Extract: Extremely safe In 1 product; Breakfast for your face. The same oats your grandmother put in an itchy-kid bath, now in a fancy bottle.
Avobenzone (3.0%): Probably fine In 1 product; The UVA-blocking hero who needs constant babysitting by stabilizers. Brilliant but fragile, like a sports car with a check-engine light.
Avocado Oil: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
AZELAIC ACID: Probably fine In 2 products; The quiet multitasker that fights redness, bumps, and dark spots at once. Tingles a little on day one, then becomes your favorite coworker.
Azelamidopropyl Dimethyl Amine: Extremely safe In 1 product; A conditioning agent — basically fabric softener, but for skin and hair. Makes everything feel smooth and static-free.

B

b Ceramide NP: Extremely safe In 1 product; The bricklayer of your skin barrier. Shows up, fills the cracks, goes home. No hype, just walls.
Bacillus Ferment: Extremely safe In 2 products; A ferment: microbes did the cooking, your skin gets the leftovers. Delicious, apparently.
Bacillus/Soybean Ferment Extract: Extremely safe In 2 products; The kombucha of skincare. Bacteria and yeast that ate something healthy and left behind a souvenir your skin happens to love.
Bakuchiol: Extremely safe In 5 products; The plant-based retinol understudy. Learned all the lines, skipped the drama, and nobody's face falls off.
Bambusa Arundinacea Stem Powder: Probably fine In 1 product; A physical exfoliant. The tiny loofah army; use gently or it turns into a tiny sandblaster.
Bambusa Vulgaris Extract: Probably fine In 1 product; A mystery plant extract. Likely harmless, possibly soothing, definitely makes the label look like a botany exam.
Bambusa Vulgaris Leaf/Stem Extract: Probably fine In 2 products; A physical exfoliant. The tiny loofah army; use gently or it turns into a tiny sandblaster.
Barium Sulfate: Extremely safe In 3 products; Mattifying dust. Swallows shine so you can survive a summer group photo.
Beeswax: Extremely safe In 8 products; The bees' original building material. Seals in moisture and gives lip balm its satisfying glide.
Beeswax / Cera Alba / Cire d'abeille: Extremely safe In 1 product; The bees' original building material. Seals in moisture and gives lip balm its satisfying glide.
Beheneth-5: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Beheneth-10: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Beheneth-25: Extremely safe In 3 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Behenic Acid: Extremely safe In 1 product; One of the fats your skin already makes. Showing up here feels like a family reunion.
Behenyl Alcohol: Extremely safe In 23 products; The 'good' alcohol. A waxy, creamy fatty alcohol — nothing like the drying stuff in toner, despite the identical last name.
Bellis Perennis (Daisy) Flower Extract: Probably fine In 3 products; The daisy-family soother. Calms most people down instantly — unless you're one of the few who sneeze at ragweed, in which case it's a frenemy.
Bentonite: Extremely safe In 10 products; Volcanic-ash clay with serious oil-absorbing ambition. Turns you into a cracked desert floor for 10 minutes, worth it.
Benzaldehyde: Proceed with caution In 1 product; A scent molecule that's legally required to be called out on EU labels for a reason. Smells pretty; picks fights with sensitive skin.
Benzalkonium Chloride: Probably fine In 1 product; An antiseptic-strength preservative. Excellent at killing germs; occasionally a bit too enthusiastic with your skin, too.
Benzoic Acid: Extremely safe In 21 products; Microbe security detail. You'll never thank it, but you'd definitely notice if it quit.
Benzotriazolyl Dodecyl P-Cresol: Extremely safe In 3 products; The bodyguard for the oils in the bottle. Takes oxidation bullets so the good stuff doesn't go rancid.
Benzyl Alcohol: Probably fine In 19 products; A preservative that also moonlights as a fragrance ingredient. Usually fine, occasionally a sensitive-skin party pooper.
Benzyl Benzoate: Proceed with caution In 18 products; A scent molecule that's legally required to be called out on EU labels for a reason. Smells pretty; picks fights with sensitive skin.
Benzyl Benzoate [ May Contain +/- : Blue 1 Lake (CI 42090), Red 6 (CI 15850), Red 7 Lake (CI 15850), Red 33 (CI 17200), Yellow 5 Lake (CI 19140), Red 30 Lake (CI 73360), Iron Oxides (CI 77491, CI 77492, CI 77499), Titanium Dioxide (CI 77891): Proceed with caution In 1 product; A scent molecule that's legally required to be called out on EU labels for a reason. Smells pretty; picks fights with sensitive skin.
Benzyl Glycol: Extremely safe In 3 products; A humectant glycol. Pulls water into your skin and keeps the formula smooth — the reliable roommate who always pays rent on time.
Benzyl Salicylate: Proceed with caution In 22 products; A scent molecule that's legally required to be called out on EU labels for a reason. Smells pretty; picks fights with sensitive skin.
Beta Vulgaris (Beet) Root Extract: Extremely safe In 3 products; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Beta Vulgaris (Beet) Root Extract/ Extrait De Racine De Betterave: Extremely safe In 1 product; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Beta-Carotene: Extremely safe In 12 products; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Beta-Caryophyllene: Probably fine In 4 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Beta-Glucan: Extremely safe In 20 products; The oat-and-mushroom hydrator that's basically hyaluronic acid with a better bedside manner.; Also listed as: Beta- Glucan
Beta-Sitosterol: Extremely safe In 6 products; Skin-identical lipid. Your barrier sees it and goes, 'oh hey, it's one of us.'
Betaine: Extremely safe In 49 products; Sugar-beet moisturizer that also makes harsher ingredients play nicer. The diplomat with a farming background.
Betaine Salicylate: Probably fine In 7 products; Salicylic acid's polite younger relative. Unclogs a bit, calms a bit, and texts before coming over.
Betula Alba Juice: Extremely safe In 3 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Betula Platyphylla Japonica Juice: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
BHA: Extremely safe In 1 product; The bodyguard for the oils in the bottle. Takes oxidation bullets so the good stuff doesn't go rancid.
BHT: Extremely safe In 10 products; An antioxidant preservative. Keeps the oils fresh so your cream doesn't smell like old crayons.
Bioflavonoids: Extremely safe In 2 products; An antioxidant multivitamin. Not flashy, never trending, quietly cleaning up pollution damage like a city sanitation worker.
Biosaccharide Gum-1: Extremely safe In 4 products; Sugar for your face, the zero-calorie kind. Pulls in moisture and makes everything feel a little sweeter.
Biosaccharide Gum-4: Extremely safe In 3 products; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
Biotin: Extremely safe In 5 products; An antioxidant multivitamin. Not flashy, never trending, quietly cleaning up pollution damage like a city sanitation worker.
Biotinoyl Tripeptide-1: Extremely safe In 1 product; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
Bis-Diglyceryl Polyacyladipate-2: Extremely safe In 7 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Bis-Ethoxydiglycol Cyclohexane 1,4-Dicarboxylate: Extremely safe In 1 product; The behind-the-scenes stagehand. Keeps the formula slippery, hydrating, and preserved. You'll never notice it, which is the point.
BIS-ETHYLHEXYLOXYPHENOL METHOXYPHENYL TRIAZINE: Probably fine In 1 product; A chemical sunscreen filter: absorbs UV like a solar panel so your face doesn't have to. Can sting eyes when you sweat — still not an excuse to skip it.
Bis-Hydroxyethoxypropyl Dimethicone: Extremely safe In 1 product; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Bis-Octyldodecyl DimerDilinoleate/Propanediol Copolymer: Extremely safe In 1 product; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
BIS-PEG-18 METHYL ETHER DIMETHYL SILANE: Extremely safe In 2 products; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
Bis-PEG/PPG-14/14: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Bis-PEG/PPG-14/14 Dimethicone: Extremely safe In 1 product; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Bis-Vinyl Dimethicone/Dimethicone Copolymer: Extremely safe In 1 product; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
Bisabolol: Extremely safe In 29 products; The chill pill extracted from chamomile. Its whole personality is 'everybody calm down.'
Bismuth Oxychloride: Probably fine In 1 product; Old-school pearly shimmer. Gorgeous glow, notorious for making some people itchy.
Bismuth Oxychloride (CI 77163) Vitamin C (Ascorbyl Palmitate) helps reduce brow breakage and promotes brow health. Vitamin E (Tocopherol) serves as a topical antioxidant: Probably fine In 2 products; A vitamin C derivative — the celebrity's stunt double. Does most of the brightening, way fewer tantrums.
Bixa Orellana Seed Extract: Probably fine In 1 product; A mystery plant extract. Likely harmless, possibly soothing, definitely makes the label look like a botany exam.
Bixa Orellana Seed Oil: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Black Iron Oxide (CI 77499): Extremely safe In 2 products; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
Blue 1 Lake (CI 42090): Extremely safe In 3 products; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).; Also listed as: Blue 1 Lake (CI 42090).
Boerhavia Diffusa Root Extract: Extremely safe In 4 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Borago Officinalis Seed Oil: Extremely safe In 5 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Boron Nitride: Extremely safe In 18 products; The blurring powder. Soft-focus filter in physical form — absorbs shine and pretends your pores are an urban legend.
Brassica Alba (White Mustard) Sprout Extract: Extremely safe In 1 product; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Brassica Campestris (Rapeseed) Seed Oil: Extremely safe In 6 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Brassica Campestris (Rapeseed) Sterols: Extremely safe In 4 products; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Brassica Campestris/ Aleurites Fordi Oil Copolymer: Extremely safe In 1 product; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Brassica Oleracea Acephala Leaf Extract: Extremely safe In 1 product; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Brassica Oleracea Italica (Broccoli) Extract: Extremely safe In 1 product; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Brassica Oleracea Italica (Broccoli) Seed Oil: Extremely safe In 4 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Bulbine Frutescens Leaf Juice: Extremely safe In 4 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
BUTY-LENE GLYCOL: Extremely safe In 1 product; The ingredient that's in everything and famous for nothing. Helps other actives sink in, then quietly leaves the stage.
Butyl Avocadate: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
BUTYL METHOXYDIBENZOYLMETHANE: Probably fine In 1 product; The UVA-blocking hero who needs constant babysitting by stabilizers. Brilliant but fragile, like a sports car with a check-engine light.
Butyl Methoxydibenzoylmethane(Avobenzone): Probably fine In 1 product; The UVA-blocking hero who needs constant babysitting by stabilizers. Brilliant but fragile, like a sports car with a check-engine light.
Butylene Glycol: Extremely safe In 204 products; The ingredient that's in everything and famous for nothing. Helps other actives sink in, then quietly leaves the stage.
Butylene Glycol Dicaprylate/Dicaprate: Extremely safe In 5 products; The solvent that helps the good stuff dissolve and sink in. Unglamorous, essential, criminally underrated.
Butylene Glycol. [+/- (May Contain) Titanium Dioxide (Ci 77891), Iron Oxides (Ci 77489, Ci 77491, Ci 77492, Ci 77499)]: Extremely safe In 1 product; The ingredient that's in everything and famous for nothing. Helps other actives sink in, then quietly leaves the stage.
Butylene/Ethylene/Styrene Copolymer: Extremely safe In 5 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Butyloctyl Salicylate: Probably fine In 8 products; BHA-lite. Gentle pore-clearing for people who want results without the 'why is my face on fire' phase.
Butylparaben: Extremely safe In 1 product; The most dragged preservative on the internet. Unfairly cast as the villain, actually keeps your products from growing a science project.
Butylphenyl Methylpropional: Proceed with caution In 1 product; One of the 'smells nice, may bite' crowd. A fragrance molecule on the official allergen watch list — lovely in a candle, dicey on a sensitive face.
Butyrospermum Parkii (Shea) Butter: Extremely safe In 57 products; The rich auntie of moisturizers. Thick, buttery, from a nut tree in West Africa, and absolutely will not let you leave dry.; Also listed as: Butyrospermum Parkii (Shea Butter)
BUTYROSPERMUM PARKII (SHEA) BUTTER EXTRACT: Extremely safe In 3 products; The rich auntie of moisturizers. Thick, buttery, from a nut tree in West Africa, and absolutely will not let you leave dry.
Butyrospermum Parkii (Shea) Butter Unsaponifiable: Extremely safe In 1 product; The rich auntie of moisturizers. Thick, buttery, from a nut tree in West Africa, and absolutely will not let you leave dry.
Butyrospermum Parkii Butter / Shea Butter: Extremely safe In 1 product; The rich auntie of moisturizers. Thick, buttery, from a nut tree in West Africa, and absolutely will not let you leave dry.

C

C9-12 Alkane: Extremely safe In 9 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
C10-18 Triglycerides: Extremely safe In 6 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
C12-13 Pareth-3: Extremely safe In 2 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
C12-15 Alkyl Benzoate: Extremely safe In 15 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.; Also listed as: C12- 15 Alkyl Benzoate
C12-16 Alcohols: Extremely safe In 2 products; A fatty alcohol. Makes creams thick and cushiony — the misunderstood sibling of drying alcohol.
C12-18 Acid Triglyceride: Extremely safe In 1 product; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
C12-18 Alkanoyl Glycerin/Sebacic Acid Copolymer: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
C12-20 ACID PEG-8 ESTER: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
C12-20 Alkyl Glucoside: Extremely safe In 4 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
C13-14 Isoparaffin: Extremely safe In 4 products; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.
C13-15 Alkane: Extremely safe In 6 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
C13-16 Isoparaffin: Extremely safe In 1 product; A wax: the structural backbone of lip balms and balms. Holds its shape so your stick doesn't melt in your pocket.
C14-22 Alcohol: Extremely safe In 1 product; A fatty alcohol. Makes creams thick and cushiony — the misunderstood sibling of drying alcohol.
C14-22 Alcohols: Extremely safe In 3 products; A fatty alcohol. Makes creams thick and cushiony — the misunderstood sibling of drying alcohol.
C15-19 Alkane: Extremely safe In 12 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
C18-21 Alkane: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
C18-36 Acid Glycol Ester: Extremely safe In 1 product; A humectant glycol. Pulls water into your skin and keeps the formula smooth — the reliable roommate who always pays rent on time.
C18-36 Acid Triglyceride: Extremely safe In 3 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
C20-40 Acid: Extremely safe In 2 products; One of the fats your skin already makes. Showing up here feels like a family reunion.
C20-40 Alcohols: Extremely safe In 2 products; A fatty alcohol. Makes creams thick and cushiony — the misunderstood sibling of drying alcohol.
C30-45 Alkyl Cetearyl Dimethicone Crosspolymer: Extremely safe In 2 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
C30-45 ALKYL DIMETHICONE: Extremely safe In 1 product; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
CACAO (COCOA) EXTRACT: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Caesalpinia Sappan Bark Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Caesalpinia Spinosa Fruit Extract: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Caesalpinia Spinosa Fruit Pod Extract: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Caffeine: Extremely safe In 24 products; Espresso for your eye bags. Won't fix your sleep schedule, but will help you lie about it convincingly.
Caffeyl Glucoside: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Calamine: Extremely safe In 1 product; The oat-and-mushroom hydrator that's basically hyaluronic acid with a better bedside manner.
Calcium Carbonate: Extremely safe In 2 products; Mattifying dust. Swallows shine so you can survive a summer group photo.
Calcium Caseinate: Extremely safe In 3 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
CALCIUM CHLORIDE: Extremely safe In 4 products; A mineral salt playing supporting cast. Balances the formula and occasionally soothes, the way a good bassist holds the band together.
CALCIUM GLUCONATE: Extremely safe In 3 products; A mineral helper. Not the lead singer — more like the sound engineer making sure everything works.
Calcium Lactate: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Calcium Pantothenate: Extremely safe In 1 product; Vitamin B5's extended family: hydrating, soothing, and allergic to drama.
Calcium Silicate: Extremely safe In 1 product; A powder that makes formulas feel velvety. The 'real-life Instagram filter' you can touch.
Calcium Sodium Borosilicate: Extremely safe In 2 products; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.
Calendula Officinalis (Calendula) Flower Extract*: Probably fine In 1 product; The daisy-family soother. Calms most people down instantly — unless you're one of the few who sneeze at ragweed, in which case it's a frenemy.
Calendula Officinalis (Marigold) Flower Extract: Probably fine In 2 products; The daisy-family soother. Calms most people down instantly — unless you're one of the few who sneeze at ragweed, in which case it's a frenemy.
Calendula Officinalis Flower Extract: Probably fine In 1 product; The daisy-family soother. Calms most people down instantly — unless you're one of the few who sneeze at ragweed, in which case it's a frenemy.
Calendula Officinalis Flower Oil: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Calendula Oinalis Flower Oil: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Calophyllum Inophyllum Seed Oil: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Camelina Sativa Seed Oil: Extremely safe In 2 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Camellia Japonica Flower Extract: Extremely safe In 2 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
CAMELLIA JAPONICA SEED EXTRACT: Extremely safe In 3 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Camellia Japonica Seed Oil: Extremely safe In 6 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Camellia Oleifera (Camellia) Seed Oil: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Camellia Oleifera (Green Tea) Leaf Extract: Extremely safe In 1 product; Green-tea zen in a bottle. Soothes, protects, and makes the label sound very wellness-retreat.
Camellia Oleifera Seed Extract: Probably fine In 1 product; An obscure botanical with a Latin name longer than a CVS receipt. Probably here to sound fancy; probably fine; plants do occasionally pick fights.
Camellia Oleifera Seed Oil: Extremely safe In 4 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Camellia Sinensis: Extremely safe In 1 product; Green-tea zen in a bottle. Soothes, protects, and makes the label sound very wellness-retreat.
Camellia Sinensis (Green Tea) Leaf Extract: Extremely safe In 9 products; Tea time for your face. Antioxidants that calm redness — no biscuits included, sadly.; Also listed as: Camellia Sinensis (Green Tea) Leaf Extract*
CAMELLIA SINENSIS (GREEN TEA) LEAF POWDER: Extremely safe In 1 product; Green-tea zen in a bottle. Soothes, protects, and makes the label sound very wellness-retreat.
Camellia Sinensis (Tea) Leaf Extract: Extremely safe In 1 product; Green-tea zen in a bottle. Soothes, protects, and makes the label sound very wellness-retreat.
Camellia Sinensis (White Tea) Leaf Extract: Extremely safe In 5 products; Green-tea zen in a bottle. Soothes, protects, and makes the label sound very wellness-retreat.; Also listed as: Camellia Sinensis (White Tea) Leaf Extract*
Camellia Sinensis Leaf: Extremely safe In 1 product; Green-tea zen in a bottle. Soothes, protects, and makes the label sound very wellness-retreat.
Camellia Sinensis Leaf Extract: Extremely safe In 22 products; Tea time for your face. Antioxidants that calm redness — no biscuits included, sadly.
Camellia Sinensis Leaf Powder: Extremely safe In 2 products; Green-tea zen in a bottle. Soothes, protects, and makes the label sound very wellness-retreat.
Camellia Sinensis Leaf Water: Extremely safe In 1 product; Tea time for your face. Antioxidants that calm redness — no biscuits included, sadly.
Camellia Sinensis Seed Extract: Extremely safe In 1 product; Green-tea zen in a bottle. Soothes, protects, and makes the label sound very wellness-retreat.
Camellia Sinensis Seed Oil: Extremely safe In 4 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Camphor: Proceed with caution In 4 products; Vapor-rub energy. Tingly, medicinal, and a little too intense to put near your eyes.
Cananga Odorata (Ylang Ylang) Flower Extract: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Cananga Odorata (Ylang Ylang) Flower Oil: Probably fine In 4 products; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Cananga Odorata Flower Oil: Probably fine In 8 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
CANANGA ODORATA OIL/EXTRACT: Probably fine In 1 product; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Canarium Luzonicum Gum Nonvolatiles: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Candelilla/Jojoba/Rice Bran Polyglyceryl-3 Esters: Extremely safe In 3 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Candida Bombicola/Glucose/Methyl Rapeseedate Ferment: Extremely safe In 3 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Cannabis Sativa Seed Oil: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Cannabis Sativa Seed Oil Glycereth-8 Esters: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
CANOLA OIL: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Caprylhydroxamic Acid: Extremely safe In 13 products; A preservative: the formula's immune system. Without it, your cream would grow a beard within weeks.
Caprylic Acid: Extremely safe In 5 products; A fatty acid: a building block of your skin's own oil slick. Familiar face, good manners.
Caprylic/ Capric/Myristic/Stearic Triglyceride: Extremely safe In 2 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.; Also listed as: Caprylic/Capric/Myristic/Stearic Triglyceride
CAPRYLIC/CAPRIC TRIGLYCE- RIDE: Extremely safe In 1 product; Coconut oil with the pore-clogging bits filtered out. Feels like silk, plays well with literally everyone.
Caprylic/Capric Triglyceride: Extremely safe In 124 products; Coconut oil with the pore-clogging bits filtered out. Feels like silk, plays well with literally everyone.; Also listed as: Caprylic/ Capric Triglyceride
Caprylic/Capric Triglycerides: Extremely safe In 1 product; Coconut oil with the pore-clogging bits filtered out. Feels like silk, plays well with literally everyone.
Caprylic/Capric/Lauric Triglyceride: Extremely safe In 1 product; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Capryloyl Glycerin/Sebacic Acid Copolymer: Extremely safe In 2 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Capryloyl Glycine: Extremely safe In 3 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Capryloyl Salicylic Acid: Probably fine In 2 products; Salicylic acid's polite younger relative. Unclogs a bit, calms a bit, and texts before coming over.
Caprylyl Caprylate/Caprate: Extremely safe In 2 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Caprylyl Glycol: Extremely safe In 132 products; Coconut-adjacent moisturizer that moonlights as a preservative booster. The formula's reliable double-shift worker.
Caprylyl Methicone: Extremely safe In 14 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Caprylyl/Capryl Glucoside: Extremely safe In 10 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Capsanthin/Capsorubin: Extremely safe In 2 products; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.
CAPSICUM FRUTESCENS FRUIT EXTRACT: Proceed with caution In 1 product; The tingle-is-working myth in a bottle. That icy-hot zing is your skin saying 'ouch' in a refreshing accent.
Caramel: Extremely safe In 8 products; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
Carbomer: Extremely safe In 70 products; The gel-maker. Turns watery serums into that satisfying jiggle — the Jell-O shot of skincare (non-alcoholic).
Carbomer/Papain Crosspolymer: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Carboxymethylcellulose sodium: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Cardiospermum Halicacabum Flower/Leaf/Vine Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Carnitine: Extremely safe In 1 product; A longevity-lab ingredient. Sounds like it belongs in a biohacker podcast, behaves like a gentle pep talk.
Carnosine: Extremely safe In 6 products; Cellular energy-drink energy. Promises your tired skin a second wind, minus the jitters.
Carrageenan: Extremely safe In 7 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Carthamus Tinctorius (Safflower) Flower Extract: Probably fine In 4 products; An obscure botanical with a Latin name longer than a CVS receipt. Probably here to sound fancy; probably fine; plants do occasionally pick fights.
Carthamus Tinctorius (Safflower) Oleosomes: Probably fine In 4 products; An obscure botanical with a Latin name longer than a CVS receipt. Probably here to sound fancy; probably fine; plants do occasionally pick fights.
Carthamus Tinctorius (Safflower) Seed Oil: Extremely safe In 18 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.; Also listed as: Carthamus Tinctorius (Saﬀlower) Seed Oil
Cassia Obtusifolia Seed Extract: Extremely safe In 6 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
CASTANEA CRENATA (CHESTNUT) SHELL EXTRACT: Probably fine In 2 products; A mystery plant extract. Likely harmless, possibly soothing, definitely makes the label look like a botany exam.
Castanea Sativa (Chestnut) Seed Extract: Probably fine In 1 product; A mystery plant extract. Likely harmless, possibly soothing, definitely makes the label look like a botany exam.
Castor Oil/IPDI Copolymer: Extremely safe In 5 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
CAULERPA LENTILLIFERA EXTRACT: Extremely safe In 1 product; Sea-vegetable skin food. The mermaid aesthetic, minus the fish tail.
Ce- tearyl Alcohol: Extremely safe In 1 product; The 'good' alcohol. Waxy, creamy, and nothing like the drying stuff in toner — it just has an unfortunate last name.
Cedrus Atlantica Bark Oil: Probably fine In 1 product; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Cedryl Acetate: Probably fine In 1 product; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Cellulose: Extremely safe In 7 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Cellulose Acetate: Extremely safe In 1 product; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Cellulose Gum: Extremely safe In 23 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Centaurea Cyanus (Cornflower) Flower Extract: Probably fine In 1 product; Flower-power calm from the daisy family. Lovely for most, a surprise allergy for the ragweed-sensitive.
Centaurea Cyanus Flower Extract: Probably fine In 1 product; The daisy-family soother. Calms most people down instantly — unless you're one of the few who sneeze at ragweed, in which case it's a frenemy.
Centella Asiatica Extract: Extremely safe In 16 products; Tiger grass — allegedly what wounded tigers roll in. The skincare equivalent of a weighted blanket and a cup of chamomile.
Centella Asiatica Flower/leaf/stem Extract: Extremely safe In 2 products; Tiger grass — allegedly what wounded tigers roll in. The skincare equivalent of a weighted blanket and a cup of chamomile.
Centella Asiatica Leaf Extract: Extremely safe In 6 products; Tiger grass — allegedly what wounded tigers roll in. The skincare equivalent of a weighted blanket and a cup of chamomile.
Centella Asiatica Leaf Water: Extremely safe In 3 products; Tiger grass — allegedly what wounded tigers roll in. The skincare equivalent of a weighted blanket and a cup of chamomile.
Centella Asiatica Oil: Extremely safe In 1 product; Tiger grass — allegedly what wounded tigers roll in. The skincare equivalent of a weighted blanket and a cup of chamomile.
Centella Asiatica Root Extract: Extremely safe In 3 products; Tiger grass — allegedly what wounded tigers roll in. The skincare equivalent of a weighted blanket and a cup of chamomile.
Cera Alba (Beeswax): Extremely safe In 10 products; The bees' original building material. Seals in moisture and gives lip balm its satisfying glide.
Cera Alba/Beeswax/Cire D'Abeille: Extremely safe In 1 product; The bees' original building material. Seals in moisture and gives lip balm its satisfying glide.
Cera Microcristallina: Extremely safe In 1 product; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.
Cera Microcristallina/Microcrystalline Wax/Cire Microcristalline: Extremely safe In 1 product; A wax: the structural backbone of lip balms and balms. Holds its shape so your stick doesn't melt in your pocket.
Ceramide 3: Extremely safe In 1 product; The bricklayer of your skin barrier. Shows up, fills the cracks, goes home. No hype, just walls.
Ceramide AP: Extremely safe In 10 products; Barrier mortar. Literally the same stuff your skin uses to hold itself together — think spackle, but flattering.
Ceramide AS: Extremely safe In 4 products; Skin-identical lipid. Your barrier sees it and goes, 'oh hey, it's one of us.'
Ceramide EOP: Extremely safe In 7 products; The bricklayer of your skin barrier. Shows up, fills the cracks, goes home. No hype, just walls.
Ceramide NP: Extremely safe In 42 products; The bricklayer of your skin barrier. Shows up, fills the cracks, goes home. No hype, just walls.
Ceramide NS: Extremely safe In 4 products; Barrier mortar. Literally the same stuff your skin uses to hold itself together — think spackle, but flattering.
Ceratonia Siliqua (Carob) Fruit Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Ceratonia Siliqua (Carob) Gum: Extremely safe In 7 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Ceresin: Extremely safe In 2 products; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.
Cereus Grandiflorus (Cactus) Flower Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Cetea- ryl Alcohol: Extremely safe In 1 product; The 'good' alcohol. Waxy, creamy, and nothing like the drying stuff in toner — it just has an unfortunate last name.
ceteareth-6: Extremely safe In 2 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Ceteareth-12: Extremely safe In 2 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Ceteareth-20: Extremely safe In 5 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
ceteareth-25: Extremely safe In 2 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Cetearyl Alcohol: Extremely safe In 69 products; The 'good' alcohol. Waxy, creamy, and nothing like the drying stuff in toner — it just has an unfortunate last name.
Cetearyl Ethylhexanoate: Extremely safe In 6 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Cetearyl Glucoside: Extremely safe In 7 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Cetearyl Olivate: Extremely safe In 21 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Ceteth-20: Extremely safe In 2 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Cetrimonium Chloride: Extremely safe In 3 products; A conditioning agent — basically fabric softener, but for skin and hair. Makes everything feel smooth and static-free.
Cetyl Alcohol: Extremely safe In 29 products; The 'good' alcohol. A waxy, creamy fatty alcohol — nothing like the drying stuff in toner, despite the identical last name.
Cetyl Betaine: Extremely safe In 1 product; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Cetyl Caprylate: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Cetyl Diglyceryl Tris(Trimethylsiloxy)Silylethyl Dimethicone: Extremely safe In 1 product; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Cetyl Dimethicone: Extremely safe In 1 product; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
Cetyl Esters: Extremely safe In 1 product; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Cetyl Ethylhexanoate: Extremely safe In 12 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Cetyl Palmitate: Extremely safe In 9 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Cetyl PEG/PPG-10/1 Dimethicone: Extremely safe In 17 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Cetylhydroxyproline Palmitamide: Extremely safe In 4 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
cetylPEG/PPG-10/1 dimethicone: Extremely safe In 1 product; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
Chamomilla Recutita (Matricaria) Extract: Probably fine In 2 products; Flower-power calm from the daisy family. Lovely for most, a surprise allergy for the ragweed-sensitive.
Chamomilla Recutita (Matricaria) Flower Extract: Probably fine In 13 products; Flower-power calm from the daisy family. Lovely for most, a surprise allergy for the ragweed-sensitive.; Also listed as: Chamomilla Recutita (Matricaria) Flower Extract*
Chamomilla Recutita (Matricaria) Flower Oil: Probably fine In 2 products; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
CHAMOMILLA RECUTITA (MATRICARIA) FLOWER WATER: Probably fine In 1 product; The daisy-family soother. Calms most people down instantly — unless you're one of the few who sneeze at ragweed, in which case it's a frenemy.
Chamomilla Recutita (Matricaria) Flower/Leaf/Stem Extract: Probably fine In 2 products; Flower-power calm from the daisy family. Lovely for most, a surprise allergy for the ragweed-sensitive.
Chamomilla Recutita Matricaria (German Chamomile) Flower Oil: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Charcoal Powder: Extremely safe In 3 products; The goth friend who absorbs everyone's oil and drama. Looks intense, acts surprisingly chill.
Chenopodium Quinoa Seed Extract: Extremely safe In 1 product; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Chlorella Vulgaris Extract: Extremely safe In 26 products; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Chlorella Vulgaris/Lupinus Albus Protein Ferment: Extremely safe In 1 product; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Chlorhexidine Digluconate: Probably fine In 1 product; An antiseptic-strength preservative. Excellent at killing germs; occasionally a bit too enthusiastic with your skin, too.
Chlorophyllin-Copper Complex: Extremely safe In 2 products; A copper booster. Supports skin repair and gives the formula a slightly blue, mad-scientist vibe.
Chlorphenesin: Extremely safe In 46 products; A preservative with a forgettable name doing a thankless job: keeping your products from becoming science experiments.
Cholesterol: Extremely safe In 16 products; Barrier mortar. Literally the same stuff your skin uses to hold itself together — think spackle, but flattering.
Chondrus Crispus: Extremely safe In 6 products; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Chondrus Crispus (Carrageenan) Extract: Extremely safe In 9 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Chondrus Crispus Extract: Extremely safe In 6 products; Sea-vegetable skin food. The mermaid aesthetic, minus the fish tail.
CHONDRUS CRISPUS POWDER: Extremely safe In 3 products; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Chromium Oxide Green (CI 77288): Extremely safe In 3 products; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.; Also listed as: Chromium Oxide Green (CI 77288).
Chromium Oxide Greens (CI 77288): Extremely safe In 5 products; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.; Also listed as: CHROMIUM OXIDE GREENS (CI 77288).; Chromium Oxide Greens (Ci 77288)]; CHROMIUM OXIDE GREENS(CI 77288)
Chrysin: Extremely safe In 5 products; A free-radical sponge. Mops up environmental damage before it turns into tomorrow's wrinkle.
Ci 19140 / Yellow 5 Lake: Extremely safe In 1 product; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.
CI 77007 (Ultramarines): Extremely safe In 1 product; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.
CI 77491: Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
CI 77491 (Iron Oxides): Extremely safe In 4 products; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.; Also listed as: Ci 77491 / Iron Oxides
CI 77492: Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Ci 77492 / Iron Oxides: Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
CI 77499: Extremely safe In 1 product; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
CI 77891 (Titanium Dioxide): Extremely safe In 4 products; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.; Also listed as: Ci 77891 / Titanium Dioxide
Cichorium Intybus (Chicory) Leaf Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Cichorium Intybus (Chicory) Root Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Cinnamomum Camphora (Camphor) Bark Oil: Proceed with caution In 4 products; Vapor-rub energy. Tingly, medicinal, and a little too intense to put near your eyes.
Cinnamomum Camphora (Camphor) Wood Oil: Proceed with caution In 2 products; Vapor-rub energy. Tingly, medicinal, and a little too intense to put near your eyes.
CINNAMYL ALCOHOL: Proceed with caution In 1 product; One of the 'smells nice, may bite' crowd. A fragrance molecule on the official allergen watch list — lovely in a candle, dicey on a sensitive face.
Cintronellol: Proceed with caution In 1 product; Smells like a citronella candle at a backyard barbecue. Keeps bugs away, sometimes also keeps your skin calm away.
Cistus Ladaniferus Leaf/Stem Extract: Extremely safe In 2 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Cistus Ladaniferus Resin: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Cistus Monspeliensis Flower/Leaf/Stem Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Citral: Proceed with caution In 40 products; The lemon-scented allergen. Smells like fresh citrus zest; to sensitive skin, it smells like trouble.
Citric Acid: Extremely safe In 137 products; A squeeze of lemon chemistry used to tune the pH. In the amounts used here, it's seasoning, not a peel.
Citronellol: Proceed with caution In 64 products; Smells like a citronella candle at a backyard barbecue. Keeps bugs away, sometimes also keeps your skin calm away.; Also listed as: Citronellol.
Citrullus Lanatus (Watermelon) Fruit Extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Citrus Aurantifolia (Lime) Oil: Proceed with caution In 5 products; Citrus oil: smells like a sunny vacation, and like a sunny vacation, can leave you blotchy if you combine it with actual sun.
Citrus Aurantium Amara (Bitter Orange) Flower Extract: Probably fine In 3 products; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.
Citrus Aurantium Amara (Bitter Orange) Flower Oil: Proceed with caution In 5 products; The orange-peel sparkle. Lovely aroma, not-so-lovely habit of irritating skin in sunlight.
Citrus Aurantium Amara (Bitter Orange) Fruit Extract: Probably fine In 1 product; Kitchen-spice-rack energy. Antioxidants with a side of 'hm, is this tingling?'
Citrus Aurantium Amara (Bitter Orange) Leaf/Twig Oil: Proceed with caution In 4 products; The orange-peel sparkle. Lovely aroma, not-so-lovely habit of irritating skin in sunlight.
Citrus Aurantium Amara (Bitter Orange) Peel Oil: Proceed with caution In 2 products; The orange-peel sparkle. Lovely aroma, not-so-lovely habit of irritating skin in sunlight.
Citrus Aurantium Amara (Neroli) Oil: Proceed with caution In 1 product; Citrus oil: smells like a sunny vacation, and like a sunny vacation, can leave you blotchy if you combine it with actual sun.
Citrus Aurantium Bergamia (Bergamot) Fruit Extract: Probably fine In 1 product; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.
Citrus Aurantium Bergamia (Bergamot) Fruit Oil: Proceed with caution In 11 products; Citrus oil: smells like a sunny vacation, and like a sunny vacation, can leave you blotchy if you combine it with actual sun.
Citrus Aurantium Bergamia (Bergamot) Peel Oil: Proceed with caution In 1 product; Zest in a bottle. Bright, cheerful, and photosensitizing — the sun and this oil should not be left alone together.
Citrus Aurantium Bergamia Fruit Oil: Proceed with caution In 1 product; The orange-peel sparkle. Lovely aroma, not-so-lovely habit of irritating skin in sunlight.
Citrus Aurantium Dulcis (Orange) Flower Oil: Proceed with caution In 1 product; Zest in a bottle. Bright, cheerful, and photosensitizing — the sun and this oil should not be left alone together.
Citrus Aurantium Dulcis (Orange) Fruit Extract: Probably fine In 5 products; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Citrus Aurantium Dulcis (Orange) Oil: Proceed with caution In 17 products; The orange-peel sparkle. Lovely aroma, not-so-lovely habit of irritating skin in sunlight.; Also listed as: Citrus Aurantium Dulcis (Orange) Oil*
Citrus Aurantium Dulcis (Orange) Peel Extract: Probably fine In 7 products; Kitchen-spice-rack energy. Antioxidants with a side of 'hm, is this tingling?'; Also listed as: Citrus Aurantium Dulcis (Orange) Peel Extract*
Citrus Aurantium Dulcis (Orange) Peel Oil: Proceed with caution In 26 products; Zest in a bottle. Bright, cheerful, and photosensitizing — the sun and this oil should not be left alone together.
Citrus Aurantium Dulcis (Orange) Peel Wax: Proceed with caution In 1 product; The orange-peel sparkle. Lovely aroma, not-so-lovely habit of irritating skin in sunlight.
CITRUS AURANTIUM PEEL OIL: Proceed with caution In 3 products; Citrus oil: smells like a sunny vacation, and like a sunny vacation, can leave you blotchy if you combine it with actual sun.
Citrus Aurantium Peel Oil (Citrus Aurantium Dulcis (Orange) Peel Oil, Citrus Aurantium Amara (Bitter Orange) Peel Oil): Proceed with caution In 1 product; Citrus oil: smells like a sunny vacation, and like a sunny vacation, can leave you blotchy if you combine it with actual sun.
Citrus Aurantium Peel Oil (Citrus Aurantium Dulcis (Orange) Peel Oil): Proceed with caution In 1 product; Citrus oil: smells like a sunny vacation, and like a sunny vacation, can leave you blotchy if you combine it with actual sun.
Citrus Clementina Peel Oil: Proceed with caution In 1 product; Zest in a bottle. Bright, cheerful, and photosensitizing — the sun and this oil should not be left alone together.
Citrus Grandis (Grapefruit) Peel Extract: Probably fine In 2 products; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.; Also listed as: Citrus Grandis (Grapefruit) Peel Extract*
Citrus Grandis (Grapefruit) Peel Oil: Proceed with caution In 3 products; The orange-peel sparkle. Lovely aroma, not-so-lovely habit of irritating skin in sunlight.
Citrus Junos Fruit Extract: Probably fine In 1 product; Kitchen-spice-rack energy. Antioxidants with a side of 'hm, is this tingling?'
Citrus Limon (Lemon) Fruit Extract: Probably fine In 8 products; Kitchen-spice-rack energy. Antioxidants with a side of 'hm, is this tingling?'
Citrus Limon (Lemon) Peel Extract: Probably fine In 5 products; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Citrus Limon (Lemon) Peel Oil: Proceed with caution In 28 products; Citrus oil: smells like a sunny vacation, and like a sunny vacation, can leave you blotchy if you combine it with actual sun.
Citrus Limon Peel Oil: Proceed with caution In 1 product; Zest in a bottle. Bright, cheerful, and photosensitizing — the sun and this oil should not be left alone together.
Citrus Medica Limonum (Lemon) Peel Oil May Contain: Mica: Proceed with caution In 1 product; Citrus oil: smells like a sunny vacation, and like a sunny vacation, can leave you blotchy if you combine it with actual sun.
Citrus Nobilis (Mandarin Orange) Fruit Extract: Probably fine In 1 product; Kitchen-spice-rack energy. Antioxidants with a side of 'hm, is this tingling?'
Citrus Nobilis (Mandarin Orange) Oil: Proceed with caution In 1 product; The orange-peel sparkle. Lovely aroma, not-so-lovely habit of irritating skin in sunlight.
Citrus Nobilis (Mandarin Orange) Peel Oil: Proceed with caution In 5 products; Zest in a bottle. Bright, cheerful, and photosensitizing — the sun and this oil should not be left alone together.
Citrus Paradisi (Grapefruit) Fruit Extract: Probably fine In 4 products; Kitchen-spice-rack energy. Antioxidants with a side of 'hm, is this tingling?'
Citrus Paradisi (Grapefruit) Peel Extract: Probably fine In 1 product; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.
Citrus Paradisi (Grapefruit) Peel Oil: Proceed with caution In 10 products; Citrus oil: smells like a sunny vacation, and like a sunny vacation, can leave you blotchy if you combine it with actual sun.
Citrus Reticulata (Tangerine) Extract: Probably fine In 1 product; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Citrus Reticulata (Tangerine) Leaf Oil: Proceed with caution In 4 products; The orange-peel sparkle. Lovely aroma, not-so-lovely habit of irritating skin in sunlight.
Citrus Reticulata (Tangerine) Peel Extract: Probably fine In 1 product; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Citrus Reticulata (Tangerine) Peel Oil: Proceed with caution In 1 product; Zest in a bottle. Bright, cheerful, and photosensitizing — the sun and this oil should not be left alone together.
Citrus Species Peel Extract: Probably fine In 2 products; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Citrus Tangerina (Tangerine) Peel Oil: Proceed with caution In 4 products; Zest in a bottle. Bright, cheerful, and photosensitizing — the sun and this oil should not be left alone together.
CITRUS UNSHIU PEEL EXTRACT: Probably fine In 2 products; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.
Co- camidopropyl Betaine: Extremely safe In 1 product; The foam-maker in gentle cleansers. Bubbly personality, rarely causes trouble (a small minority of skin begs to differ).
Cocamide MEA: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Cocamidopropyl Betaine: Extremely safe In 21 products; The foam-maker in gentle cleansers. Bubbly personality, rarely causes trouble (a small minority of skin begs to differ).
Cocamidopropyl Dimethylamine: Extremely safe In 1 product; A conditioning agent — basically fabric softener, but for skin and hair. Makes everything feel smooth and static-free.
Cocamidopropyl Hydroxysultaine: Extremely safe In 7 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Cocamidopropyl PG-Dimonium Chloride Phosphate: Extremely safe In 1 product; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
COCCAPRYLATE/CAPRATE: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Coccinia Indica Fruit Extract: Extremely safe In 3 products; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Coco-Betaine: Extremely safe In 2 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Coco-Caprylate: Extremely safe In 11 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Coco-Caprylate/Caprate: Extremely safe In 18 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Coco-Glucoside: Extremely safe In 14 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Cocoa Seed Butter: Probably fine In 1 product; Rich, buttery, and a known pore-clogger for some. Dreamy for dry skin, a potential breakout invitation for oily skin.
Cocoglycerides: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Coconut Acid: Extremely safe In 3 products; A fatty acid: a building block of your skin's own oil slick. Familiar face, good manners.
Coconut Alkanes: Extremely safe In 4 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Coconut Alkanes (and) Polysilicone 11: Extremely safe In 1 product; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
Cocos Nucifera (Coconut) Fruit Extract: Extremely safe In 3 products; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Cocos Nucifera (Coconut) Fruit Water: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Cocos Nucifera (Coconut) Oil: Probably fine In 14 products; Delicious in curry, divisive on faces. Moisturizes beautifully, but clogs pores for a lot of acne-prone people.
Cocos Nucifera (Coconut) Water: Extremely safe In 2 products; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Cocos Nucifera Fruit Extract: Extremely safe In 2 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Cocoyl Hydrolyzed Collagen: Extremely safe In 4 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Coenochloris Signiensis Extract: Extremely safe In 1 product; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Coffea Arabica (Coffee) Seed Extract: Extremely safe In 4 products; Espresso for your face. Wakes up puffy, tired skin the way your morning cup wakes up you.
COIX LACRYMA-JOBI MA-YUEN SEED EXTRACT: Extremely safe In 2 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Coleus Forskohlii Root Extract: Probably fine In 1 product; A mystery plant extract. Likely harmless, possibly soothing, definitely makes the label look like a botany exam.
COLLAGEN: Extremely safe In 2 products; Collagen on top of your skin can't fix collagen inside it — it just sits there being an excellent moisturizer with great PR.
Collagen Amino Acids: Extremely safe In 26 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Colloidal Oatmeal: Extremely safe In 1 product; Breakfast for your face. The same oats your grandmother put in an itchy-kid bath, now in a fancy bottle.
Commiphora Myrrha Gum Oil: Probably fine In 4 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
convallaria majalis bulb/root extract: Extremely safe In 2 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Copernicia Cerifera (Carnauba) Wax: Extremely safe In 7 products; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.
COPERNICIA CERIFERA (CARNAUBA) WAX / COPERNICIA CERIFERA CERA / CIRE DE CARNAUBA: Extremely safe In 4 products; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.; Also listed as: Copernicia Cerifera (Carnauba) Wax/Copernicia Cerifera Cera/Cire De Carnauba
Copernicia Cerifera (Carnauba) Wax/Copernicia Cerifera Cera: Extremely safe In 1 product; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.
Copernicia Cerifera Cera: Extremely safe In 8 products; A wax: the structural backbone of lip balms and balms. Holds its shape so your stick doesn't melt in your pocket.
Copper Citrate: Extremely safe In 1 product; A copper booster. Supports skin repair and gives the formula a slightly blue, mad-scientist vibe.
Copper Gluco- nate: Extremely safe In 1 product; A copper booster. Supports skin repair and gives the formula a slightly blue, mad-scientist vibe.
Copper Gluconate: Extremely safe In 12 products; A copper booster. Supports skin repair and gives the formula a slightly blue, mad-scientist vibe.
Copper Lysinate/Prolinate: Extremely safe In 1 product; A copper booster. Supports skin repair and gives the formula a slightly blue, mad-scientist vibe.
Copper PCA: Extremely safe In 3 products; A copper booster. Supports skin repair and gives the formula a slightly blue, mad-scientist vibe.
Copper Sulfate: Extremely safe In 1 product; A copper booster. Supports skin repair and gives the formula a slightly blue, mad-scientist vibe.
Copper Tripeptide-1: Extremely safe In 9 products; Blue copper peptides: a tiny contractor in a hard hat, renovating collagen one cell at a time. Tints your serum Smurf-blue as a bonus.
Copper Tripeptide-1 (GHK-Cu): Extremely safe In 2 products; Blue copper peptides: a tiny contractor in a hard hat, renovating collagen one cell at a time. Tints your serum Smurf-blue as a bonus.
Coptis Japonica Root Extract: Extremely safe In 3 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Corallina Officinalis Extract: Extremely safe In 5 products; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Cordyceps Sinensis Extract: Extremely safe In 1 product; Fungi with a glow-up. Hydrating, soothing, and the reason your serum shelf is starting to look like a forest floor.
Coriandrum Sativum (Coriander) Fruit Oil: Probably fine In 4 products; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Cornus Officinalis Fruit Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Coumarin: Proceed with caution In 8 products; A scent molecule that's legally required to be called out on EU labels for a reason. Smells pretty; picks fights with sensitive skin.
Crambe Abyssinica Seed Oil: Extremely safe In 2 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Crambe Maritima Leaf Extract: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Crataegus Monogyna Flower Extract: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
CREATINE: Extremely safe In 1 product; Cellular energy-drink energy. Promises your tired skin a second wind, minus the jitters.
Crithmum Maritimum Extract: Extremely safe In 4 products; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Crocus Sativus (Saffron) Flower Extract: Probably fine In 1 product; A mystery plant extract. Likely harmless, possibly soothing, definitely makes the label look like a botany exam.
Cryptomeria Japonica Leaf Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Cucumis Melo (Melon) Fruit Extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Cucumis Sativus (Cucumber) Fruit Extract: Extremely safe In 18 products; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.; Also listed as: Cucumis Sativus(Cucumber) Fruit Extract
Cucumis Sativus (Cucumber) Oil: Extremely safe In 2 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Cucumis Sativus (Cucumber) Seed Extract: Extremely safe In 2 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.; Also listed as: Cucumis Sativus (Cucumber) Seed Extract*
Cucumis Sativus (Cucumber) Seed Oil: Extremely safe In 3 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Cucurbita Pepo (Pumpkin) Seed Extract: Extremely safe In 1 product; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Cucurbita Pepo (Pumpkin) Seed Oil: Extremely safe In 3 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Cupressus Sempervirens Leaf Oil: Probably fine In 2 products; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Cupressus Sempervirens Leaf/Nut/Stem Oil: Probably fine In 3 products; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Cupressus Sempervirens Leaf/Stem Extract: Probably fine In 1 product; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Cupressus Sempervirens Oil: Probably fine In 4 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Curcuma Longa (Turmeric) Leaf Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Curcuma Longa (Turmeric) Root Extract: Extremely safe In 9 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Cyamopsis Tetragonoloba (Guar) Gum: Extremely safe In 4 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Cyanidium Caldarium Extract: Extremely safe In 1 product; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Cyanocobalamin: Extremely safe In 12 products; Vitamin-shelf support staff. Small dose, steady work, no fan club required.
CYCLODEXTRIN: Extremely safe In 6 products; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
CYCLOHEXASILOXANE: Extremely safe In 5 products; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
Cyclomethicone: Extremely safe In 2 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Cyclopentasiloxane: Extremely safe In 22 products; The silicone that evaporates. Leaves a silky finish then disappears like a magician bowing out.
Cymbopogon Citratus Leaf Oil: Proceed with caution In 1 product; The menthol-mint-spice squad. Feels invigorating for 10 seconds, then sensitive skin starts writing a complaint letter.
Cymbopogon Martini Oil: Proceed with caution In 9 products; The menthol-mint-spice squad. Feels invigorating for 10 seconds, then sensitive skin starts writing a complaint letter.
Cymbopogon Nardus (Citronella) Oil: Proceed with caution In 5 products; Spicy-fresh and proud of it. Wakes your face up the way a cold shower wakes up your soul — loudly.
Cymbopogon Schoenanthus (Lemongrass) Oil: Proceed with caution In 1 product; Spicy-fresh and proud of it. Wakes your face up the way a cold shower wakes up your soul — loudly.
Cymbopogon Schoenanthus Oil: Proceed with caution In 6 products; Spicy-fresh and proud of it. Wakes your face up the way a cold shower wakes up your soul — loudly.
Cympopagon Flexuosus (Lemon Grass) Oil: Proceed with caution In 2 products; Spicy-fresh and proud of it. Wakes your face up the way a cold shower wakes up your soul — loudly.; Also listed as: Cympopagon Flexuosus (Lemon Grass) Oil*
Cypripedium Pubescens Extract: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
CYSTEINE: Extremely safe In 1 product; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Cystine: Extremely safe In 2 products; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Cystoseira Tamariscifolia Extract: Extremely safe In 1 product; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'

D

Daucus Carota Sativa (Carrot) Root Extract: Extremely safe In 14 products; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Daucus Carota Sativa (Carrot) Root Water: Extremely safe In 1 product; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Daucus Carota Sativa (Carrot) Seed Oil: Extremely safe In 9 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Daucus Carota Sativa (Wild Carrot) Seed Oil: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Decyl Glucoside: Extremely safe In 11 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Decyl Oleate: Extremely safe In 2 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Decylene Glycol: Extremely safe In 1 product; A humectant glycol. Pulls water into your skin and keeps the formula smooth — the reliable roommate who always pays rent on time.
Dehydroacetic Acid: Extremely safe In 16 products; Microbe security detail. You'll never thank it, but you'd definitely notice if it quit.
Dextran: Extremely safe In 2 products; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
DEXTRIN: Extremely safe In 33 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Dextrin Palmitate: Extremely safe In 2 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Di-C12-13 Alkyl Malate: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Di-C12-15 Alkyl Fumarate: Extremely safe In 1 product; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
diamond powder: Probably fine In 1 product; The scrub particle. Sandpaper with a spa membership — great for texture, terrible if you go at it like you're refinishing a deck.
Diatomaceous Earth: Extremely safe In 5 products; The face mask that turns you into a cracked desert floor for 10 minutes. Soaks up oil like a nosy neighbor soaks up gossip.
Dibutyl Adipate: Extremely safe In 2 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Dibutyl Ethylhexanoyl Glutamide: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Dibutyl Lauroyl Glutamide: Extremely safe In 1 product; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Dicaprylyl Carbonate: Extremely safe In 21 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Dicaprylyl Ether: Extremely safe In 11 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Didecyldimonium Chloride: Probably fine In 6 products; An antiseptic-strength preservative. Excellent at killing germs; occasionally a bit too enthusiastic with your skin, too.
Diethoxyethyl Succinate: Extremely safe In 5 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Diethylhexyl 2,6-Naphthalate: Probably fine In 1 product; A chemical sunscreen filter: absorbs UV like a solar panel so your face doesn't have to. Can sting eyes when you sweat — still not an excuse to skip it.
Diethylhexyl Carbonate: Extremely safe In 1 product; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Diethylhexyl Sodium Sulfosuccinate: Extremely safe In 1 product; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Diethylhexyl Succinate: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Diethylhexyl Syringylidenemalonate: Probably fine In 1 product; A chemical sunscreen filter: absorbs UV like a solar panel so your face doesn't have to. Can sting eyes when you sweat — still not an excuse to skip it.
Diglucosyl Gallic Acid: Extremely safe In 2 products; An antioxidant multivitamin. Not flashy, never trending, quietly cleaning up pollution damage like a city sanitation worker.
Diglycerin: Extremely safe In 4 products; The OG moisture magnet's extended family. Pulls in water, makes zero fuss.
Diheptyl Succinate: Extremely safe In 2 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Diisopropyl Adipate: Extremely safe In 2 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Diisopropyl Sebacate: Extremely safe In 2 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
diisostearoyl polyglyceryl-3 dimer dilinoleate: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Diisostearyl Malate: Extremely safe In 9 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Dilinoleic Acid/Butanediol Copolymer: Extremely safe In 3 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Dimethicone: Extremely safe In 94 products; The ultimate Instagram filter in a bottle. Fills in texture so your skin looks like it's been airbrushed by a professional.
Dimethicone Crosspolymer: Extremely safe In 13 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Dimethicone/PEG-10/15 Crosspolymer: Extremely safe In 7 products; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.; Also listed as: Dimethicone/ PEG-10/15 Crosspolymer
Dimethicone/PEG10/15 Crosspolymer: Extremely safe In 1 product; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Dimethicone/Polyglycerin-3 Crosspolymer: Extremely safe In 1 product; The OG moisture magnet's extended family. Pulls in water, makes zero fuss.
Dimethicone/Vinyl: Extremely safe In 1 product; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Dimethicone/Vinyl Dimethicone Crosspolymer: Extremely safe In 16 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.; Also listed as: Dimethicone/ Vinyl Dimethicone Crosspolymer
Dimethiconol: Extremely safe In 12 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
DIMETHICONOL STEARATE: Extremely safe In 1 product; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Dimethyl Capramide: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Dimethyl Isosorbide: Extremely safe In 15 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Dimethyl MEA: Extremely safe In 14 products; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
DIOSCOREA JAPONICA ROOT EXTRACT: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Dioscorea Villosa (Wild Yam) Root Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Diosmine: Extremely safe In 1 product; A free-radical sponge. Mops up environmental damage before it turns into tomorrow's wrinkle.
Dipalmitoyl Hydroxyproline: Extremely safe In 2 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Dipeptide Diaminobutyroyl Benzylamide Diacetate: Extremely safe In 4 products; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
Dipeptide-2: Extremely safe In 2 products; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
DIPHE-NYL DIMETHICONE: Extremely safe In 1 product; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
DIPHENYLSILOXY PHENYL TRIMETHICONE: Extremely safe In 4 products; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
Dipotassium Glycyrrhizate: Extremely safe In 38 products; Licorice root's most soothing molecule. Redness takes one look at it and decides to calm down.
Dipropylene Glycol: Extremely safe In 32 products; A solvent that helps fragrance and extracts dissolve. The backstage crew that makes sure everyone gets their lines.
Dipropylene Glycol Dibenzoate: Extremely safe In 1 product; The solvent that helps the good stuff dissolve and sink in. Unglamorous, essential, criminally underrated.
Dipteryx Odorata Seed Extract: Probably fine In 2 products; A mystery plant extract. Likely harmless, possibly soothing, definitely makes the label look like a botany exam.
Disiloxan: Extremely safe In 1 product; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Disiloxane: Extremely safe In 4 products; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
Disodium Acetyl Glucosamine Phosphate: Extremely safe In 4 products; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
DISODIUM COCOAMPHODIACETATE: Extremely safe In 7 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Disodium Cocoyl Glutamate: Extremely safe In 2 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
DISODIUM ED-TA: Extremely safe In 1 product; The water-softener of skincare. Grabs the metals from tap water before they can sabotage the formula.
Disodium EDTA: Extremely safe In 110 products; The water-softener of skincare. Grabs the metals from tap water before they can sabotage the formula.
Disodium Laureth Sulfosuccinate: Extremely safe In 5 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Disodium Lauryl Sulfosuccinate: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Disodium Phosphate: Extremely safe In 11 products; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Disodium Phosphate. [+/-] Titanium Dioxide (CI 77891): Extremely safe In 1 product; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Disodium Stearoyl Glutamate: Extremely safe In 9 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Disteardimonium Hectorite: Extremely safe In 25 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Disteareth-75 IPDI: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Disteareth-100 IPDI: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Distearyldimonium Chloride: Extremely safe In 1 product; A conditioning agent — basically fabric softener, but for skin and hair. Makes everything feel smooth and static-free.
Divinyldimethicone/Dimethicone Copolymer: Extremely safe In 1 product; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Docosahexaenoic Acid: Extremely safe In 1 product; A fatty acid: a building block of your skin's own oil slick. Familiar face, good manners.
Dunaliella Salina Extract: Extremely safe In 5 products; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Dunaliella Salina Extract Panthenol: Extremely safe In 1 product; Vitamin B5's extended family: hydrating, soothing, and allergic to drama.

E

Echinacea Angustifolia Extract: Probably fine In 1 product; The daisy-family soother. Calms most people down instantly — unless you're one of the few who sneeze at ragweed, in which case it's a frenemy.
Echinacea Purpurea Extract: Probably fine In 4 products; Flower-power calm from the daisy family. Lovely for most, a surprise allergy for the ragweed-sensitive.
Echium: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Echium Plantagineum Seed Oil: Extremely safe In 3 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Eclipta Prostrata Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
ECTOIN: Extremely safe In 5 products; A molecule that keeps microbes alive in salt lakes and deserts. Your dry office air doesn't scare it.
Elaeis Guineensis (Palm) Butter: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Elaeis Guineensis (Palm) Kernel Oil: Extremely safe In 3 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.; Also listed as: Elaeis Guineensis(Palm) Kernel Oil
Elaeis Guineensis (Palm) Oil: Extremely safe In 10 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.; Also listed as: Elaeis Guineensis(Palm) oil
Enantia Chlorantha Bark Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Epigallocatechin Gallatyl Glucoside: Extremely safe In 1 product; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Epilobium Angustifolium Flower/Leaf/Stem Extract: Extremely safe In 3 products; Floral water-colour energy. Soft soothing, softer marketing.
Equisetum Arvense Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Ergosterol: Extremely safe In 1 product; An antioxidant multivitamin. Not flashy, never trending, quietly cleaning up pollution damage like a city sanitation worker.
Ergothioneine: Extremely safe In 3 products; Cellular energy-drink energy. Promises your tired skin a second wind, minus the jitters.
Eriocephalus Punctulatus (Cape Chamomile) Flower Oil: Probably fine In 1 product; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Erythritol: Extremely safe In 6 products; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
Escin: Extremely safe In 1 product; A free-radical sponge. Mops up environmental damage before it turns into tomorrow's wrinkle.
Ethoxydiglycol: Extremely safe In 5 products; A humectant glycol. Pulls water into your skin and keeps the formula smooth — the reliable roommate who always pays rent on time.
Ethyl Acetate: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Ethyl Ferulate: Extremely safe In 1 product; An antioxidant multivitamin. Not flashy, never trending, quietly cleaning up pollution damage like a city sanitation worker.
Ethyl Hexanediol: Extremely safe In 13 products; The behind-the-scenes stagehand. Keeps the formula slippery, hydrating, and preserved. You'll never notice it, which is the point.
Ethyl Linoleate: Extremely safe In 1 product; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Ethyl Macadamiate: Extremely safe In 2 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
ETHYL OLEATE: Extremely safe In 1 product; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Ethyl Vanillin: Probably fine In 1 product; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Ethylcellulose: Extremely safe In 3 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
ETHYLENE/ACRYLIC ACID COPOLYMER: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Ethylene/Propylene Copolymer: Extremely safe In 3 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Ethylene/Propylene/Styrene Copolymer: Extremely safe In 5 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Ethylhexyl Hydroxystearate: Extremely safe In 3 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
ETHYLHEXYL METHOXYCINNAMATE: Probably fine In 1 product; A chemical sunscreen filter: absorbs UV like a solar panel so your face doesn't have to. Can sting eyes when you sweat — still not an excuse to skip it.
Ethylhexyl Olivate: Extremely safe In 5 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Ethylhexyl Palmitate: Extremely safe In 21 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
ETHYLHEXYL SALICYLATE: Probably fine In 1 product; A chemical sunscreen filter: absorbs UV like a solar panel so your face doesn't have to. Can sting eyes when you sweat — still not an excuse to skip it.
Ethylhexyl Salicylate(Octisalate): Probably fine In 1 product; A UV-absorbing sunscreen filter. Your face's personal solar panel, with a mild habit of stinging when it slides into your eyes.
Ethylhexyl Stearate: Extremely safe In 5 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Ethylhexylglycerin: Extremely safe In 173 products; The preservative's hype man. Doesn't do much alone, but makes phenoxyethanol look really good at its job.
Eucalyptol: Proceed with caution In 3 products; A scent molecule that's legally required to be called out on EU labels for a reason. Smells pretty; picks fights with sensitive skin.
Eucalyptus Globulus Leaf Extract: Probably fine In 1 product; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Eucalyptus Globulus Leaf Oil: Proceed with caution In 26 products; The menthol-mint-spice squad. Feels invigorating for 10 seconds, then sensitive skin starts writing a complaint letter.
EUCALYPTUS GLOBULUS OIL: Proceed with caution In 3 products; The tingle-is-working myth in a bottle. That icy-hot zing is your skin saying 'ouch' in a refreshing accent.
Eugenia Caryophyllus (Clove) Bud Oil: Proceed with caution In 5 products; The tingle-is-working myth in a bottle. That icy-hot zing is your skin saying 'ouch' in a refreshing accent.
Eugenia Caryophyllus (Clove) Leaf Oil: Proceed with caution In 16 products; The tingle-is-working myth in a bottle. That icy-hot zing is your skin saying 'ouch' in a refreshing accent.
Eugenia Caryophyllus Oil (Eugenia Caryophyllus (Clove) Leaf Oil): Proceed with caution In 1 product; The tingle-is-working myth in a bottle. That icy-hot zing is your skin saying 'ouch' in a refreshing accent.
Eugenol: Proceed with caution In 16 products; A scent molecule that's legally required to be called out on EU labels for a reason. Smells pretty; picks fights with sensitive skin.; Also listed as: Eugenol.
Euphorbia Cerifera (Candelilla) Wax: Extremely safe In 7 products; A wax: the structural backbone of lip balms and balms. Holds its shape so your stick doesn't melt in your pocket.
Euphorbia Cerifera (Candelilla) Wax/Euphorbia Cerifera Cera/Cire De Candelilla: Extremely safe In 3 products; A wax: the structural backbone of lip balms and balms. Holds its shape so your stick doesn't melt in your pocket.; Also listed as: EUPHORBIA CERIFERA (CANDELILLA) WAX / EUPHORBIA CERIFERA CERA / CIRE DE CANDELILLA
EUPHORBIA CERIFERA(CANDELILLA)WAX(EUPHORBIA CERIFERA CERA): Extremely safe In 1 product; An occlusive seal. Basically shrink-wrap for hydration.
Euphrasia Officinalis (Eyebright) Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Euphrasia Officinalis Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Euterpe Oleracea (Acai) Fruit Extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Euterpe Oleracea (Acai) Fruit Oil: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Euterpe Oleracea Fruit Extract: Extremely safe In 2 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Evodia Rutaecarpa Fruit Extract: Probably fine In 1 product; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.

F

Farnesol: Proceed with caution In 4 products; One of the 'smells nice, may bite' crowd. A fragrance molecule on the official allergen watch list — lovely in a candle, dicey on a sensitive face.
Ferula Galbaniflua (Galbanum) Resin Oil: Probably fine In 1 product; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Ferulic Acid: Extremely safe In 8 products; The ingredient that makes vitamin C and E work harder. The supportive coach shouting from the sidelines.
Flavor (Aroma): Proceed with caution In 2 products; Eau de 'trust me.' A blend of unlisted scent chemicals that smells lovely and is the top culprit behind cosmetic allergies.; Also listed as: Flavor/Aroma
Foeniculum Vulgare (Fennel) Oil: Probably fine In 1 product; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Folic Acid: Extremely safe In 1 product; Vitamin-shelf support staff. Small dose, steady work, no fan club required.
Fomes Officinalis (Mushroom) Extract: Extremely safe In 1 product; Fungi with a glow-up. Hydrating, soothing, and the reason your serum shelf is starting to look like a forest floor.
FRAGARIA CHILOENSIS (STRAWBERRY) FRUIT EXTRACT: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Fragrance: Proceed with caution In 3 products; The mystery box. 'Fragrance' can legally hide dozens of undisclosed chemicals — smells like a spa, sometimes acts like a mugger.
Fragrance (Parfum): Proceed with caution In 138 products; Eau de 'trust me.' A blend of unlisted scent chemicals that smells lovely and is the top culprit behind cosmetic allergies.; Also listed as: FRAGRANCE / PARFUM; Fragrance/Parfum; Fragrance(Parfum)
fragrance/parfum. (+/-): Iron Oxides (CI 77491, CI 77492, CI 77499): Proceed with caution In 1 product; The secret recipe nobody has to disclose. Makes the jar smell expensive; the #1 reason sensitive skin throws a tantrum.
Fraxinus Excelsior Bark Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Fructooligosaccharides: Extremely safe In 2 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Fructose: Extremely safe In 3 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Fucus Vesiculosus Extract: Extremely safe In 1 product; Sea-vegetable skin food. The mermaid aesthetic, minus the fish tail.
Fumaria Officinalis Flower/Leaf/Stem Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Fumaric Acid: Probably fine In 1 product; A fruit-acid sidekick. Usually here in small amounts to brighten or balance — rarely the star, occasionally a tiny bit spicy.
Fusanus Spicatus Wood Oil: Probably fine In 1 product; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.

G

Galactoarabinan: Extremely safe In 3 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Gallic Acid: Extremely safe In 1 product; Vitamin-shelf support staff. Small dose, steady work, no fan club required.
Gamma-Undecalactone: Probably fine In 1 product; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
GANODERMA LUCIDUM (MUSHROOM) EXTRACT: Extremely safe In 1 product; Fungi with a glow-up. Hydrating, soothing, and the reason your serum shelf is starting to look like a forest floor.
Ganoderma Lucidum (Mushroom) Stem Extract: Extremely safe In 1 product; Mushroom magic (the legal, skincare kind). Calms and hydrates like a forest-bathing session.
Garcinia Indica Seed Butter: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Gardenia Florida Fruit Extract: Extremely safe In 7 products; Floral water-colour energy. Soft soothing, softer marketing.
Gardenia Jasminoides Fruit Extract: Extremely safe In 2 products; Floral water-colour energy. Soft soothing, softer marketing.
Gardenia Tahitensis Flower: Extremely safe In 3 products; Floral water-colour energy. Soft soothing, softer marketing.
Gardenia Taitensis Flower: Extremely safe In 1 product; Floral water-colour energy. Soft soothing, softer marketing.
Gelidium Cartilagineum Extract: Extremely safe In 1 product; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Gentiana Lutea Root Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Geraniol: Proceed with caution In 74 products; The rose-scented allergen. Smells romantic, occasionally breaks your skin's heart.
Geraniol. [+/- Iron Oxides (CI 77489, CI 77491, CI 77492, CI 77499), Chromium Oxide Greens (CI 77288)].: Proceed with caution In 1 product; The rose-scented allergen. Smells romantic, occasionally breaks your skin's heart.
Geranyl Acetate: Proceed with caution In 4 products; The perfume counter's favorite troublemaker. Gorgeous smell, known contact allergen, especially once it oxidizes.
Gevuina Avellana Seed Oil: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Gigartina Stellata Extract: Extremely safe In 3 products; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Ginkgo Biloba Leaf Extract: Extremely safe In 4 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Gleditsia Triacanthos Seed Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Glucomannan: Extremely safe In 1 product; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Gluconolactone: Probably fine In 19 products; A PHA: the exfoliant that knocks before entering. Smooths things out without starting any fires.
Glucosamine HCL: Extremely safe In 4 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Glucose: Extremely safe In 7 products; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
Glucosylrutin: Extremely safe In 1 product; Vitamin-shelf support staff. Small dose, steady work, no fan club required.
Glutamic Acid: Extremely safe In 8 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Glutathione: Extremely safe In 13 products; The 'master antioxidant' with main-character energy. Mops up free radicals and wants you to know about it.
Glycereth-7 Triacetate: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Glycereth-18: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Glycereth-18 Ethylhexanoate: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Glycereth-25 PCA Isostearate: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Glycereth-26: Extremely safe In 2 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Glycerin: Extremely safe In 273 products; The OG moisture magnet. Cheap, boring, in practically everything — and it outperforms half the $90 serums that brag about containing it.; Also listed as: Glycerin**
GlycerinAloe Barbadensis Extract: Extremely safe In 1 product; The OG moisture magnet. Cheap, boring, in practically everything — and it outperforms half the $90 serums that brag about containing it.
Glycerinm: Extremely safe In 1 product; The OG moisture magnet. Cheap, boring, in practically everything — and it outperforms half the $90 serums that brag about containing it.
Glyceryl Acrylate/Acrylate Acid Copolymer: Extremely safe In 1 product; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Glyceryl Acrylate/Acrylic Acid Copolymer: Extremely safe In 17 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Glyceryl Acrylate/Acrylic Acif Copolymer: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Glyceryl Behenate: Extremely safe In 2 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Glyceryl Behenate/Eicosadioate: Extremely safe In 3 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Glyceryl Caprate: Extremely safe In 1 product; Microbe security detail. You'll never thank it, but you'd definitely notice if it quit.
Glyceryl Caprylate: Extremely safe In 45 products; The bouncer that keeps bacteria and mold out of the club. Unglamorous, essential, and the reason your moisturizer isn't fuzzy.
Glyceryl Caprylate/Caprate: Extremely safe In 1 product; A preservative: the formula's immune system. Without it, your cream would grow a beard within weeks.
Glyceryl Dioleate: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Glyceryl Glucoside: Extremely safe In 1 product; A natural moisturizing factor — basically your skin's built-in water bottle, refilled from outside.
Glyceryl Laurate: Extremely safe In 3 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Glyceryl Linoleate: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Glyceryl Oleate: Extremely safe In 7 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Glyceryl Polyacrylate: Extremely safe In 14 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Glyceryl Polymethacrylate: Extremely safe In 10 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Glyceryl Polymethacrylate. [+/- (May Contain) Mica, Iron Oxides (Ci 77491, Ci 77492, Ci 77499), Titanium Dioxide (Ci 77891)]: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
GLYCERYL POLYMETHCRYLATE: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Glyceryl Stearate: Extremely safe In 74 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Glyceryl Stearate Citrate: Extremely safe In 8 products; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Glyceryl Stearate PEG-100 Stearate: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Glyceryl Stearate SE: Extremely safe In 21 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Glyceryl Undecylenate: Extremely safe In 1 product; The bouncer that keeps bacteria and mold out of the club. Unglamorous, essential, and the reason your moisturizer isn't fuzzy.
Glycine: Extremely safe In 10 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
GLYCINE MAX (SOYBEAN) POLYPEPTIDE: Extremely safe In 2 products; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
Glycine Soja (Soybean) Lipids: Extremely safe In 1 product; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Glycine Soja (Soybean) Oil: Extremely safe In 25 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.; Also listed as: Glycine Soja (Soybean)Oil
Glycine Soja (Soybean) Seed Extract: Extremely safe In 2 products; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Glycine Soja (Soybean) Sterols: Extremely safe In 3 products; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Glycogen: Extremely safe In 1 product; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
GLYCOL DISTEARATE: Extremely safe In 6 products; The behind-the-scenes stagehand. Keeps the formula slippery, hydrating, and preserved. You'll never notice it, which is the point.
GLYCOL STEARATE: Extremely safe In 2 products; The behind-the-scenes stagehand. Keeps the formula slippery, hydrating, and preserved. You'll never notice it, which is the point.
Glycolic Acid: Proceed with caution In 15 products; The overachieving exfoliant with the tiniest molecules and the biggest ego. Dissolves dead skin like it has a deadline — and occasionally takes a little live skin as a souvenir.
Glycolipids: Extremely safe In 2 products; Skin-identical lipid. Your barrier sees it and goes, 'oh hey, it's one of us.'
Glycoproteins: Extremely safe In 2 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Glycosphingolipids: Extremely safe In 2 products; Skin-identical lipid. Your barrier sees it and goes, 'oh hey, it's one of us.'
Glycyrrhetinic Acid: Extremely safe In 2 products; Licorice root, minus the candy aisle. Calms redness and fades spots like a grandma with a secret brightening hobby.
Glycyrrhiza Glabra (Licorice) Rhizome/Root: Extremely safe In 1 product; The calming licorice compound. Redness's natural enemy, no black jellybeans required.
Glycyrrhiza Glabra (Licorice) Root Extract: Extremely safe In 20 products; Licorice root, minus the candy aisle. Calms redness and fades spots like a grandma with a secret brightening hobby.
GLYCYRRHIZA URALENSIS (LICORICE) ROOT EXTRACT: Extremely safe In 2 products; Licorice root, minus the candy aisle. Calms redness and fades spots like a grandma with a secret brightening hobby.
Gossypium herbaceum (cotton) extract: Extremely safe In 1 product; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Green 6 (CI 61565): Extremely safe In 2 products; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Grifola Frondosa: Extremely safe In 1 product; Mushroom magic (the legal, skincare kind). Calms and hydrates like a forest-bathing session.
Guaiacum Officinale Wood Oil: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Guar Hydroxypropyltrimonium Chloride: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.

H

Haematococcus Pluvialis Extract: Extremely safe In 3 products; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Hamamelis Virginiana (Witch Hazel) Extract: Probably fine In 1 product; The old-school astringent. Tightens and degreases like a strict 1950s gym teacher — sometimes overdoes it on dry skin.
Hamamelis Virginiana (Witch Hazel) Leaf Extract: Probably fine In 3 products; The old-school astringent. Tightens and degreases like a strict 1950s gym teacher — sometimes overdoes it on dry skin.
Hamamelis Virginiana (Witch Hazel) Water: Probably fine In 4 products; The old-school astringent. Tightens and degreases like a strict 1950s gym teacher — sometimes overdoes it on dry skin.
HDI/Trimethylol Hexyllactone Crosspolymer: Extremely safe In 7 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Hectorite: Extremely safe In 3 products; Mud with a résumé. Draws out oil and leaves your face feeling freshly power-washed.
Hedera Helix (Ivy) Extract: Extremely safe In 2 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Helianthus: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Helianthus Annuus (Sunflower) Extract: Extremely safe In 5 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
HELIANTHUS ANNUUS (SUNFLOWER) SEED EXTRACT: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Helianthus Annuus (Sunflower) Seed Oil: Extremely safe In 80 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.; Also listed as: Helianthus Annuus (Sunflower) Seed Oil*
Helianthus Annuus (Sunflower) Seed Oil Unsaponifiables: Extremely safe In 2 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Helianthus Annuus (Sunflower) Seed Oil/Helianthus Annuus Seed Oil: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Helianthus Annuus (Sunflower) Seed Wax: Extremely safe In 5 products; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.
Helianthus Annuus (Sunflower) Sprout Extract: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Helianthus Annuus Seed Oil / Sunflower Seed Oil: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Helichrysum Italicum Extract: Extremely safe In 1 product; Floral water-colour energy. Soft soothing, softer marketing.
HEMEROCALLIS FULVA FLOWER EXTRACT: Extremely safe In 1 product; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Heptapeptide-7: Extremely safe In 1 product; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
Heptyl Undecylenate: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Hesperidin Methyl Chalcone: Extremely safe In 1 product; An antioxidant multivitamin. Not flashy, never trending, quietly cleaning up pollution damage like a city sanitation worker.
Hex ylene Glycol: Extremely safe In 1 product; The solvent that helps the good stuff dissolve and sink in. Unglamorous, essential, criminally underrated.
Hexanediol: Extremely safe In 1 product; The behind-the-scenes stagehand. Keeps the formula slippery, hydrating, and preserved. You'll never notice it, which is the point.
HexanediolPentylene Glycol: Extremely safe In 1 product; The solvent that helps the good stuff dissolve and sink in. Unglamorous, essential, criminally underrated.
HEXAPEPTIDE-9: Extremely safe In 9 products; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
Hexapeptide-11: Extremely safe In 1 product; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
Hexyl Cinnamal: Proceed with caution In 11 products; A scent molecule that's legally required to be called out on EU labels for a reason. Smells pretty; picks fights with sensitive skin.
Hexyl Laurate: Extremely safe In 3 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Hexyldecanol: Extremely safe In 6 products; The 'good' alcohol. A waxy, creamy fatty alcohol — nothing like the drying stuff in toner, despite the identical last name.
Hexylene Glycol: Extremely safe In 17 products; A humectant glycol. Pulls water into your skin and keeps the formula smooth — the reliable roommate who always pays rent on time.
Hexylresorcinol: Probably fine In 2 products; A dark-spot fader with a chemistry-teacher name. Usually fine; sensitive skin occasionally files a complaint.
Hibiscus Sabdariffa Fruit Extract: Extremely safe In 2 products; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Hibiscus Syriacus Bark Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Hieracium Pilosella (Hawkweed Daisy) Extract: Probably fine In 1 product; The daisy-family soother. Calms most people down instantly — unless you're one of the few who sneeze at ragweed, in which case it's a frenemy.
Hippophae: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Hippophae Rhamnoides Fruit Extract: Extremely safe In 2 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Hippophae Rhamnoides Fruit Oil: Extremely safe In 5 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Hippophae Rhamnoides Kernel Extract: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Hippophae Rhamnoides Seed Oil: Extremely safe In 2 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Hippophae Rhamnoides Water: Extremely safe In 2 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Histidine: Extremely safe In 3 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Homosalate: Probably fine In 1 product; A classic chemical sunscreen filter. Gets the job done, stings if it meets your eyes during a sweaty run.
Homosalate (5.0%): Probably fine In 1 product; A classic chemical sunscreen filter. Gets the job done, stings if it meets your eyes during a sweaty run.
Honey: Probably fine In 1 product; Nature's humectant: sticky, soothing, mildly antibacterial. Bee-allergic folks, this is your stop.
HONEY / MEL / MIEL: Probably fine In 3 products; Nature's humectant: sticky, soothing, mildly antibacterial. Bee-allergic folks, this is your stop.
Honey Extract: Probably fine In 5 products; Nature's humectant: sticky, soothing, mildly antibacterial. Bee-allergic folks, this is your stop.
Hordeum Vulgare Seed Extract: Extremely safe In 1 product; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
HOUTTUYNIA CORDATA EXTRACT: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Humulus Lupulus (Hops) Extract: Extremely safe In 2 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Hyaluronic Acid: Extremely safe In 47 products; A thirsty sponge that drinks 1,000x its weight in water. Fantastic for plumping your face, assuming you don't live in a literal desert where it will just pull the water out of your soul instead.
Hydrated Silica: Extremely safe In 8 products; A powder that makes formulas feel velvety. The 'real-life Instagram filter' you can touch.
Hydroacetonphenone: Extremely safe In 1 product; Microbe security detail. You'll never thank it, but you'd definitely notice if it quit.
Hydrogenated Castor Oil: Extremely safe In 5 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
HYDROGENATED CASTOR OIL DIMER DILINOLEATE: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
HYDROGENATED CASTOR OIL ISOSTEARATE: Extremely safe In 3 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Hydrogenated Coco-glycerides: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Hydrogenated Coconut Acid: Extremely safe In 1 product; One of the fats your skin already makes. Showing up here feels like a family reunion.
Hydrogenated Coconut Oil: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Hydrogenated Dimer Dilinoleic Acid/Poly-propanediol-8 Co-polymer: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Hydrogenated Ethylhexyl Olivate: Extremely safe In 3 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Hydrogenated Farnesene: Extremely safe In 1 product; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Hydrogenated Jojoba Oil: Extremely safe In 5 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Hydrogenated Lecithin: Extremely safe In 37 products; Egg-yolk and soybean chemistry that helps oil and water hold hands. Also the reason your mayo doesn't separate.
Hydrogenated Olive Oil: Extremely safe In 2 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
HYDROGENATED OLIVE OIL CETYL ESTERS: Extremely safe In 1 product; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Hydrogenated Olive Oil Unsaponifiables: Extremely safe In 2 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Hydrogenated Palm Glyceride: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Hydrogenated Palm Glycerides: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Hydrogenated Palm Glycerides Citrate: Extremely safe In 8 products; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Hydrogenated Palm Kernel Glycerides: Extremely safe In 2 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Hydrogenated Palm Oil: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Hydrogenated Phosphatidylcholine: Extremely safe In 7 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Hydrogenated Poly(C6-14 Olefin): Extremely safe In 7 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Hydrogenated Poly(C6-20 Olefin): Extremely safe In 5 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Hydrogenated Polydecene: Extremely safe In 3 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Hydrogenated Polyisobutene: Extremely safe In 19 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Hydrogenated Soybean Oil: Extremely safe In 2 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Hydrogenated Starch Hydrolysate: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Hydrogenated Vegetable Glycerides: Extremely safe In 2 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
HYDROGENATED VEGETABLE GLYCERIDES CITRATE: Extremely safe In 1 product; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Hydrogenated Vegetable Oil: Extremely safe In 7 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Hydrolyzed Algae Extract: Extremely safe In 1 product; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Hydrolyzed Algin: Extremely safe In 1 product; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Hydrolyzed BetaGlucan: Extremely safe In 1 product; The oat-and-mushroom hydrator that's basically hyaluronic acid with a better bedside manner.
Hydrolyzed Collagen: Extremely safe In 13 products; Collagen on top of your skin can't fix collagen inside it — it just sits there being an excellent moisturizer with great PR.
Hydrolyzed Corn Starch: Extremely safe In 4 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Hydrolyzed Cottonseed Protein: Extremely safe In 1 product; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Hydrolyzed DNA: Extremely safe In 6 products; An amino acid — a Lego brick your skin uses to build its own moisture factor.
HYDROLYZED EXTENSIN: Extremely safe In 3 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Hydrolyzed Gardenia Florida Extract: Extremely safe In 2 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
HYDROLYZED GINSENG SAPONINS: Extremely safe In 9 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
HYDROLYZED GINSENG SAPONINS (ENZYME TREATED RED GINSENG SAPONINS): Extremely safe In 1 product; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Hydrolyzed Glycosaminoglycans: Extremely safe In 5 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Hydrolyzed Hibiscus Esculentus Extract: Extremely safe In 1 product; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Hydrolyzed Hyaluronic Acid: Extremely safe In 48 products; A thirsty sponge that drinks 1,000x its weight in water. Fantastic for plumping your face, assuming you don't live in a literal desert where it will just pull the water out of your soul instead.
Hydrolyzed Jojoba Esters: Extremely safe In 13 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Hydrolyzed Lupine Protein: Extremely safe In 1 product; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Hydrolyzed Milk Protein: Extremely safe In 2 products; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Hydrolyzed Oat Protein: Extremely safe In 1 product; Oat power: the gentlest itch-fighter in the pantry. Soothing, humble, slightly porridge-adjacent.
Hydrolyzed Opuntia Ficus-Indica Flower Extract: Extremely safe In 1 product; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Hydrolyzed Rhodophycea Extract: Extremely safe In 1 product; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Hydrolyzed Rhodophyceae Extract: Extremely safe In 3 products; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Hydrolyzed Rice Protein: Extremely safe In 3 products; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Hydrolyzed Sodium Hyaluronate: Extremely safe In 16 products; A thirsty sponge that drinks 1,000x its weight in water. Fantastic for plumping your face, assuming you don't live in a literal desert where it will just pull the water out of your soul instead.
Hydrolyzed Soy Protein: Extremely safe In 5 products; An amino acid — a Lego brick your skin uses to build its own moisture factor.
HYDROLYZED SOYBEAN EXTRACT: Extremely safe In 3 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Hydrolyzed Ulva Lactuca (Sea Lettuce) Extract: Extremely safe In 1 product; An amino acid — a Lego brick your skin uses to build its own moisture factor.
HYDROLYZED VEGETABLE PROTEIN: Extremely safe In 4 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Hydrolyzed Wheat Flour: Extremely safe In 1 product; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Hydrolyzed Wheat Protein: Extremely safe In 3 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Hydrolyzed Wheat Starch: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Hydrolyzed Yeast Protein: Extremely safe In 1 product; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Hydroxyacetophenone: Extremely safe In 60 products; Modern preservative booster that also calms skin. Sounds scary, acts like a lavender-scented security guard.
Hydroxycitronellal: Proceed with caution In 16 products; One of the 'smells nice, may bite' crowd. A fragrance molecule on the official allergen watch list — lovely in a candle, dicey on a sensitive face.
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl: Extremely safe In 1 product; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer: Extremely safe In 41 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.; Also listed as: Hydroxyethyl Acrylate/ Sodium Acryloyldimethyl Taurate Copolymer
Hydroxyethyl Ethylcellulose: Extremely safe In 1 product; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Hydroxyethyl Urea: Extremely safe In 5 products; A natural moisturizing factor — basically your skin's built-in water bottle, refilled from outside.
Hydroxyethyl- cellulose: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Hydroxyethylcellulose: Extremely safe In 11 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Hydroxyhydrocinnamate: Extremely safe In 1 product; The bodyguard for the oils in the bottle. Takes oxidation bullets so the good stuff doesn't go rancid.
Hydroxymethoxyphenyl Decanone: Extremely safe In 2 products; An antioxidant multivitamin. Not flashy, never trending, quietly cleaning up pollution damage like a city sanitation worker.
Hydroxyphenoxy Propionic Acid: Probably fine In 3 products; Brightening muscle. Quietly tells pigment to calm down, works best with patience and sunscreen.
Hydroxyphenyl Propamidobenzoic Acid: Extremely safe In 7 products; Microbe security detail. You'll never thank it, but you'd definitely notice if it quit.
Hydroxypinacolone Retinoate: Probably fine In 5 products; The 'retinoid that skips the line.' Works without converting first, so it's gentler — think retinol after a meditation retreat.
Hydroxypropyl Bis-Hydroxyethyldimonium Chloride: Extremely safe In 1 product; A conditioning agent — basically fabric softener, but for skin and hair. Makes everything feel smooth and static-free.
Hydroxypropyl Bislauramide MEA: Extremely safe In 2 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Hydroxypropyl Bispalmitamide MEA: Extremely safe In 3 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Hydroxypropyl Cyclodextrin: Extremely safe In 1 product; Sugar for your face, the zero-calorie kind. Pulls in moisture and makes everything feel a little sweeter.
Hydroxypropyl Guar Hydroxypropyltrimonium Chloride: Extremely safe In 4 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
HYDROXYPROPYL METHYLCELLULOSE: Extremely safe In 2 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Hydroxypropyl Starch Phosphate: Extremely safe In 6 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Hydroxypropyl Tetrahydropyrantriol: Extremely safe In 1 product; A longevity-lab ingredient. Sounds like it belongs in a biohacker podcast, behaves like a gentle pep talk.
Hydroxypropylcellulose: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Hydroxypropyltrimonium Hyaluronate: Extremely safe In 7 products; A thirsty sponge that drinks 1,000x its weight in water. Fantastic for plumping your face, assuming you don't live in a literal desert where it will just pull the water out of your soul instead.
Hydroxystearic Acid: Extremely safe In 6 products; One of the fats your skin already makes. Showing up here feels like a family reunion.
Hylocereus Undatus Fruit Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.

I

Ictasol: Extremely safe In 1 product; An antioxidant multivitamin. Not flashy, never trending, quietly cleaning up pollution damage like a city sanitation worker.
Ilex Paraguariensis Leaf Extract: Extremely safe In 2 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
illite: Extremely safe In 1 product; The face mask that turns you into a cracked desert floor for 10 minutes. Soaks up oil like a nosy neighbor soaks up gossip.
Inonotus Obliquus (Mushroom) Extract: Extremely safe In 3 products; Mushroom magic (the legal, skincare kind). Calms and hydrates like a forest-bathing session.
Inositol: Extremely safe In 8 products; Vitamin-shelf support staff. Small dose, steady work, no fan club required.
Inulin: Extremely safe In 6 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Inulin Lauryl Carbamate: Extremely safe In 2 products; Sugar for your face, the zero-calorie kind. Pulls in moisture and makes everything feel a little sweeter.
Ipomoea Batatas Root Extract: Extremely safe In 1 product; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Iron Cxides (CI 77499): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Iron Oxide (CI 77489): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Iron Oxide (CI 77491): Extremely safe In 1 product; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
Iron Oxide (CI 77492): Extremely safe In 2 products; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.; Also listed as: Iron Oxide (CI 77492).
Iron Oxide (CI 77499): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Iron Oxide Black (Cl 77499): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
IRON OXIDE BLACK(CI 77499): Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Iron Oxide Brown (CI 77489): Extremely safe In 1 product; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
Iron Oxide Red (Cl 77491): Extremely safe In 1 product; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.
IRON OXIDE RED(CI 77491): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Iron Oxide Yellow (Cl 77492): Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
IRON OXIDE YELLOW(CI 77492): Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Iron Oxides: Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Iron Oxides (CI 77489, CI 77491, CI 77492, CI 77499): Extremely safe In 2 products; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.
Iron Oxides (CI 77489, CI 77492): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Iron Oxides (CI 77491, CI 77492, CI 77499): Extremely safe In 14 products; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.; Also listed as: IRON OXIDES (CI 77491, CI 77492, CI 77499).
Iron Oxides (CI 77491, CI 77492): Extremely safe In 1 product; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.
Iron Oxides (CI 77491): Extremely safe In 8 products; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).; Also listed as: Iron Oxides CI 77491
IRON OXIDES (CI 77492, 77491, 77499): Extremely safe In 1 product; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.
Iron Oxides (CI 77492): Extremely safe In 4 products; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.; Also listed as: Iron Oxides CI 77492
Iron Oxides (CI 77499): Extremely safe In 6 products; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.; Also listed as: Iron Oxides (CI 77499).
Iron Oxides (CI77491, CI77492, CI77499): Extremely safe In 1 product; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
Iron Oxides (Cl 77491): Extremely safe In 1 product; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
Isoamyl Laurate: Extremely safe In 5 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
ISOAMYL P-METHOXYCINNAMATE: Probably fine In 1 product; A chemical sunscreen filter: absorbs UV like a solar panel so your face doesn't have to. Can sting eyes when you sweat — still not an excuse to skip it.
Isobutane: Extremely safe In 4 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Isoceteth-20: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Isochrysis Galbana Extract: Extremely safe In 1 product; Sea-vegetable skin food. The mermaid aesthetic, minus the fish tail.
ISODECYL NEOPENTANOATE: Extremely safe In 1 product; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Isododecane: Extremely safe In 20 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Isoeugenol: Proceed with caution In 1 product; The perfume counter's favorite troublemaker. Gorgeous smell, known contact allergen, especially once it oxidizes.
Isoeugenyl Acetate: Proceed with caution In 3 products; The perfume counter's favorite troublemaker. Gorgeous smell, known contact allergen, especially once it oxidizes.
Isohexadecane: Extremely safe In 8 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Isoleucine: Extremely safe In 3 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Isomalt: Extremely safe In 2 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Isononyl Isononanoate: Extremely safe In 30 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Isopentane: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Isopentyldiol: Extremely safe In 5 products; The solvent that helps the good stuff dissolve and sink in. Unglamorous, essential, criminally underrated.
Isopropyl Alcohol: Proceed with caution In 3 products; The quick-dry party guest. Makes products feel light and fresh, then leaves with your skin's moisture in its pocket.
Isopropyl Isostearate: Probably fine In 1 product; Rich, buttery, and a known pore-clogger for some. Dreamy for dry skin, a potential breakout invitation for oily skin.
Isopropyl Jojobate: Extremely safe In 1 product; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Isopropyl Lauroyl Sarcosinate: Extremely safe In 2 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Isopropyl Myristate: Probably fine In 7 products; A silky emollient with a sneaky reputation for clogging pores. Smooth as butter on dry skin, a breakout invite for acne-prone folks.
Isopropyl Palmitate: Probably fine In 13 products; A silky emollient with a sneaky reputation for clogging pores. Smooth as butter on dry skin, a breakout invite for acne-prone folks.
Isopropyl Titanium Triisostearate: Extremely safe In 5 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Isosorbide Dicaprylate: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Isostearamidopropyl Dimethylamine: Extremely safe In 1 product; A conditioning agent — basically fabric softener, but for skin and hair. Makes everything feel smooth and static-free.
Isostearamidopropyl Ethyldimonium Ethosulfate: Extremely safe In 1 product; A conditioning agent — basically fabric softener, but for skin and hair. Makes everything feel smooth and static-free.
Isostearic Acid: Extremely safe In 8 products; A fatty acid: a building block of your skin's own oil slick. Familiar face, good manners.
Isostearyl Alcohol: Extremely safe In 2 products; The 'good' alcohol. A waxy, creamy fatty alcohol — nothing like the drying stuff in toner, despite the identical last name.
Isostearyl Neopentanoate: Extremely safe In 2 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
isotridecyl isononanoate: Extremely safe In 1 product; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.

J

Jania Rubens Extract: Extremely safe In 1 product; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Jasmine Oil/Extract: Probably fine In 1 product; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Jasminum Officinale (Jasmine) Flower Powder: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Jasminum Officinale (Jasmine) Flower/Leaf Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Jasminum Officinale (Jasmine) Oil: Probably fine In 2 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Jasminum Sambac (Jasmine) Flower Extract: Extremely safe In 6 products; Floral water-colour energy. Soft soothing, softer marketing.
Jojoba Esters: Extremely safe In 13 products; Technically a wax, not an oil, which is why it's so eerily similar to your skin's own sebum. The friend who blends in at every party.
Jojoba Wax PEG-120 Esters: Extremely safe In 2 products; Technically a wax, not an oil, which is why it's so eerily similar to your skin's own sebum. The friend who blends in at every party.
JUGLANS REGIA (WALNUT) SEED EXTRACT: Probably fine In 2 products; The scrub particle. Sandpaper with a spa membership — great for texture, terrible if you go at it like you're refinishing a deck.
Juniperus Communis Fruit Oil: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Juniperus Communis Wood Oil: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Juniperus Mexicana Oil: Probably fine In 2 products; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Juniperus Virginiana Oil: Probably fine In 10 products; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.

K

Kaolin: Extremely safe In 16 products; Gentle white clay that sops up oil without turning your face into the Sahara. The polite clay mask.
Kappaphycus Alvarezii Extract: Extremely safe In 2 products; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Keratin Amino Acids: Extremely safe In 1 product; An amino acid — a Lego brick your skin uses to build its own moisture factor.

L

Lactic Acid: Probably fine In 45 products; The gentle AHA that used to work at a dairy. Exfoliates and hydrates at the same time, like a facialist who also brings snacks.
Lactic Acid (L): Probably fine In 1 product; A fruit-acid sidekick. Usually here in small amounts to brighten or balance — rarely the star, occasionally a tiny bit spicy.
Lactic Acid/Glycolic Acid Copolymer: Extremely safe In 3 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Lactis Lipida/Milk Lipids/Lipides Du Lait: Extremely safe In 1 product; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Lactis Proteinum/Milk Protein/Protéine Du Lait: Extremely safe In 1 product; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Lactobacillus: Extremely safe In 4 products; The kombucha of skincare. Bacteria and yeast that ate something healthy and left behind a souvenir your skin happens to love.
Lactobacillus Extracellular Vesicles: Extremely safe In 1 product; A ferment: microbes did the cooking, your skin gets the leftovers. Delicious, apparently.
Lactobacillus Ferment: Extremely safe In 32 products; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
Lactobacillus Ferment Lysate: Extremely safe In 10 products; The kombucha of skincare. Bacteria and yeast that ate something healthy and left behind a souvenir your skin happens to love.
Lactobacillus/Acerola Cherry Ferment: Extremely safe In 1 product; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
Lactobacillus/Pear Juice Ferment Filtrate: Extremely safe In 1 product; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
Lactobacillus/Pumpkin Ferment Extract: Extremely safe In 3 products; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
Lactobacillus/Pumpkin Fruit Ferment Filtrate: Extremely safe In 1 product; A ferment: microbes did the cooking, your skin gets the leftovers. Delicious, apparently.
Lactobacillus/Punica Granatum Fruit Ferment Extract: Extremely safe In 1 product; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
Lactobacillus/Rice Ferment: Extremely safe In 1 product; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
Lactobacillus/Soybean Ferment Extract: Extremely safe In 4 products; The kombucha of skincare. Bacteria and yeast that ate something healthy and left behind a souvenir your skin happens to love.
Lactobacillus/Tomato Fruit Ferment Extract: Extremely safe In 1 product; A ferment: microbes did the cooking, your skin gets the leftovers. Delicious, apparently.
Lactobionic Acid: Probably fine In 4 products; A PHA: the exfoliant that knocks before entering. Smooths things out without starting any fires.
Lactococcus Ferment Lysate: Extremely safe In 1 product; The kombucha of skincare. Bacteria and yeast that ate something healthy and left behind a souvenir your skin happens to love.
Laminaria Digitata (Algae) Extract*: Extremely safe In 3 products; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Laminaria Digitata (Sea Kelp) Extract: Extremely safe In 1 product; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Laminaria Digitata (Seakelp) Extract: Extremely safe In 1 product; Sea-vegetable skin food. The mermaid aesthetic, minus the fish tail.
Laminaria Digitata Extract: Extremely safe In 10 products; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Laminaria Ochro- leuca Extract: Extremely safe In 1 product; Sea-vegetable skin food. The mermaid aesthetic, minus the fish tail.
Laminaria Ochroleuca Extract: Extremely safe In 7 products; Sea-vegetable skin food. The mermaid aesthetic, minus the fish tail.
Lanolin Oil: Probably fine In 1 product; Sheep-wool grease. An incredible moisturizer for cracked lips — and a known allergen for a handful of unlucky folks.
Lauramide DEA: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Laureth-4: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Laureth-7: Extremely safe In 4 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Laureth-12: Extremely safe In 4 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Laureth-21: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Laureth-23: Extremely safe In 6 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Lauric Acid: Extremely safe In 10 products; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Lauroyl Lysine: Extremely safe In 11 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Lauryl Alcohol: Extremely safe In 3 products; The 'good' alcohol. A waxy, creamy fatty alcohol — nothing like the drying stuff in toner, despite the identical last name.
LAURYL BETAINE: Extremely safe In 4 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Lauryl Glucoside: Extremely safe In 7 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
LAURYL HYDROXYSULTAINE: Extremely safe In 3 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Lauryl Laurate: Extremely safe In 2 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Lauryl PEG-8 Dimethicone: Extremely safe In 1 product; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone: Extremely safe In 5 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Lauryl PEG-10 Tris(Trimethylsiloxy)silylethyl Dimethicone: Extremely safe In 1 product; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
LAURYL PEG/PPG-18/18 METHICONE: Extremely safe In 1 product; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
Lavandula Angustifolia (Lavender) Flower Extract: Probably fine In 8 products; Lavender: smells like your grandma's linen closet. Relaxing for your brain, occasionally less relaxing for sensitive skin.
Lavandula Angustifolia (Lavender) Flower Water: Probably fine In 2 products; Lavender: smells like your grandma's linen closet. Relaxing for your brain, occasionally less relaxing for sensitive skin.
Lavandula Angustifolia (Lavender) Flower/Leaf/Stem Extract: Probably fine In 6 products; Lavender: smells like your grandma's linen closet. Relaxing for your brain, occasionally less relaxing for sensitive skin.; Also listed as: Lavandula Angustifolia (Lavender) Flower/Leaf Stem Extract*
Lavandula Angustifolia (Lavender) Oil: Probably fine In 29 products; Lavender: smells like your grandma's linen closet. Relaxing for your brain, occasionally less relaxing for sensitive skin.; Also listed as: Lavandula Angustifolia (Lavender) Oil*
Lavandula Hybrida Grosso (Lavender) Flower/Leaf Stem Oil*.: Probably fine In 1 product; Spa-day lavender. Calms your nerves on contact; calms your skin only if it's not one of the touchy ones.
Lavandula Hybrida Grosso Herb Oil: Probably fine In 1 product; Spa-day lavender. Calms your nerves on contact; calms your skin only if it's not one of the touchy ones.
Lavandula Hybrida Oil: Probably fine In 28 products; Lavender: smells like your grandma's linen closet. Relaxing for your brain, occasionally less relaxing for sensitive skin.
Lavandula Oil/ Extract: Probably fine In 7 products; Lavender: smells like your grandma's linen closet. Relaxing for your brain, occasionally less relaxing for sensitive skin.; Also listed as: LAVANDULA OIL/EXTRACT
Lavandula Oil/Extract (Lavandula Hybrida Oil): Probably fine In 1 product; Lavender: smells like your grandma's linen closet. Relaxing for your brain, occasionally less relaxing for sensitive skin.
Lavandula Spica (Lavender) Flower/Leaf/Stem Extract: Probably fine In 2 products; Lavender: smells like your grandma's linen closet. Relaxing for your brain, occasionally less relaxing for sensitive skin.
Lecithin: Extremely safe In 43 products; Egg-yolk and soybean chemistry that helps oil and water hold hands. Also the reason your mayo doesn't separate.
Lens Esculenta (Lentil) Fruit Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Lentinus Edodes Mycelium Extract: Extremely safe In 2 products; Mushroom magic (the legal, skincare kind). Calms and hydrates like a forest-bathing session.
leontopodium alpinum flower/leaf extract: Extremely safe In 2 products; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Leptospermum Scoparium Branch/Leaf Oil: Probably fine In 2 products; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Lespedeza Capitata Leaf/Stem Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
LEUCINE: Extremely safe In 1 product; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Leuconostoc/Radish Root Ferment Filtrate: Extremely safe In 45 products; Fermented radish water that doubles as a natural preservative. Grandma's kimchi energy, but for your face.; Also listed as: Leuconostoc/ Radish Root Ferment Filtrate
Levulinic Acid: Extremely safe In 1 product; The bouncer that keeps bacteria and mold out of the club. Unglamorous, essential, and the reason your moisturizer isn't fuzzy.
Ligustrum Lucidum Seed Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Lilium Candidum (Madonna Lily) Flower Extract: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
LILIUM CANDIDUM BULB EXTRACT: Extremely safe In 3 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
lilium candidum flower extract: Extremely safe In 3 products; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
LILIUM TIGRINUM BULB EXTRACT: Extremely safe In 11 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Limnanthes Alba (Meadowfoam) Seed Oil: Extremely safe In 12 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Limonene: Proceed with caution In 132 products; The orange-peel scent molecule. Smells like a sunny Sunday, oxidizes into a common skin allergen on Monday.
LIMONENE. MAY CONTAIN / PEUT CONTENIR (+/-): TITANIUM DIOXIDE (CI 77891): Proceed with caution In 1 product; The orange-peel scent molecule. Smells like a sunny Sunday, oxidizes into a common skin allergen on Monday.
Linalool: Proceed with caution In 132 products; The lavender-smelling molecule that becomes an irritant when it meets air. Charming at first, grumpy after oxidation.; Also listed as: Linalool.
Linalyl Acetate: Proceed with caution In 11 products; One of the 'smells nice, may bite' crowd. A fragrance molecule on the official allergen watch list — lovely in a candle, dicey on a sensitive face.
Linoleic Acid: Extremely safe In 7 products; A fatty acid: a building block of your skin's own oil slick. Familiar face, good manners.
Linolenic Acid: Extremely safe In 5 products; One of the fats your skin already makes. Showing up here feels like a family reunion.
Linum Usitatissimum (Flax) Seed Oil: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Linum Usitatissimum (Linseed) Seed Extract: Extremely safe In 3 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Linum Usitatissimum (Linseed) Seed Oil: Extremely safe In 4 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Linum Usitatissimum Seed Oil: Extremely safe In 2 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Lipase: Probably fine In 1 product; An enzyme exfoliant — basically a tiny Pac-Man that eats dead skin. Effective, but it doesn't always check whether the skin is dead first.
Lippia Citriodora (Lemon Verbena) Flower Extract: Probably fine In 1 product; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Liquid Paraffin: Extremely safe In 2 products; Baby-oil energy. Cosmetic-grade, ultra-pure, and less villainous than its internet reputation suggests.
LITHOSPERMUM ERYTHRORHIZON ROOT EXTRACT: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Lithothamnion Calcareum Extract: Extremely safe In 2 products; The face mask that turns you into a cracked desert floor for 10 minutes. Soaks up oil like a nosy neighbor soaks up gossip.
Lithothamnion Calcareum Powder: Extremely safe In 2 products; Mud with a résumé. Draws out oil and leaves your face feeling freshly power-washed.
Litsea Cubeba Fruit Oil: Proceed with caution In 6 products; The orange-peel sparkle. Lovely aroma, not-so-lovely habit of irritating skin in sunlight.
Lonicera Caprifolium (Honeysuckle) Flower Extract: Extremely safe In 1 product; Floral water-colour energy. Soft soothing, softer marketing.
Lonicera Caprifolium (Honeysuckle) Flower Extract (and) Lonicera Japonica (Honeysuckle) Flower Extract: Extremely safe In 2 products; Floral water-colour energy. Soft soothing, softer marketing.
Lonicera Caprifolium (Honeysuckle) Flower Extract (and) Simmondsia Chinensis (Jojoba) Seed Oil: Extremely safe In 1 product; Technically a wax, not an oil, which is why it's so eerily similar to your skin's own sebum. The friend who blends in at every party.
Lonicera Japonica (Honeysuckle) Flower Extract: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Lotus Corniculatus (Lotus Flower) Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Luffa Cylindrica Root Extract: Extremely safe In 1 product; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Lupinus Albus Seed Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Lycium Barbarum Fruit Extract: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Lycium Chinense Extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
LYCIUM CHINENSE FRUIT EXTRACT: Extremely safe In 4 products; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Lycium Chinense Stem Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Lysine: Extremely safe In 2 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Lysine Aspartate: Extremely safe In 1 product; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Lysine HCl: Extremely safe In 5 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Lysolecithin: Extremely safe In 3 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.

M

Macadamia Integrifolia Seed Oil: Extremely safe In 2 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Macadamia Intergrifolia Seed Oil: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Macadamia Ternifolia Seed Oil: Extremely safe In 11 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Macrocystis Pyrifera (Kelp) Extract: Extremely safe In 1 product; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Madecassic Acid: Extremely safe In 12 products; Part of Centella's chill-out crew. Redness takes one look and decides to calm down.
Madecassoside: Extremely safe In 15 products; Centella's most famous molecule, isolated for maximum chill. Redness, meet your therapist.
Magnesium Aluminum Silicate: Extremely safe In 4 products; A powder that makes formulas feel velvety. The 'real-life Instagram filter' you can touch.
Magnesium Ascorbyl Phosphate: Probably fine In 2 products; A vitamin C derivative — the celebrity's stunt double. Does most of the brightening, way fewer tantrums.
Magnesium Ascorbyl Phosphate (Vitamin C): Probably fine In 2 products; A vitamin C derivative — the celebrity's stunt double. Does most of the brightening, way fewer tantrums.
Magnesium Aspartate: Extremely safe In 13 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Magnesium Carbonate: Extremely safe In 5 products; The blurring powder. Soft-focus filter in physical form — absorbs shine and pretends your pores are an urban legend.
Magnesium Chloride: Extremely safe In 2 products; A mineral helper. Not the lead singer — more like the sound engineer making sure everything works.
MAGNESIUM GLUCONATE: Extremely safe In 1 product; A mineral salt playing supporting cast. Balances the formula and occasionally soothes, the way a good bassist holds the band together.
Magnesium Myristate: Extremely safe In 2 products; Mattifying dust. Swallows shine so you can survive a summer group photo.
Magnesium Oxide: Extremely safe In 1 product; A mineral salt playing supporting cast. Balances the formula and occasionally soothes, the way a good bassist holds the band together.
Magnesium Silicate: Extremely safe In 1 product; A powder that makes formulas feel velvety. The 'real-life Instagram filter' you can touch.
Magnesium Stearate: Extremely safe In 3 products; A powder that makes formulas feel velvety. The 'real-life Instagram filter' you can touch.
Magnesium Sulfate: Extremely safe In 15 products; A mineral helper. Not the lead singer — more like the sound engineer making sure everything works.
magnolia liliflora flower extract: Extremely safe In 2 products; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Magnolia Officinalis Bark Extract: Extremely safe In 2 products; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Malachite Extract: Extremely safe In 4 products; The face mask that turns you into a cracked desert floor for 10 minutes. Soaks up oil like a nosy neighbor soaks up gossip.
Malic Acid: Probably fine In 4 products; A mild acid with exfoliating ambitions. Gentle at low doses; stacked with other acids, it can tip into tingly territory.
Malpighia Emarginata (Acerola) Fruit Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
MALTITOL: Extremely safe In 1 product; Sugar for your face, the zero-calorie kind. Pulls in moisture and makes everything feel a little sweeter.
Malto- dextrin: Extremely safe In 1 product; Sugar for your face, the zero-calorie kind. Pulls in moisture and makes everything feel a little sweeter.
Maltodextrin: Extremely safe In 28 products; Sugar for your face, the zero-calorie kind. Pulls in moisture and makes everything feel a little sweeter.
Maltooligosyl Glucoside: Extremely safe In 1 product; Basically candy chemistry repurposed for hydration. Wonka would approve.
Malus Domestica Fruit Cell Culture Extract: Extremely safe In 4 products; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Malus Domestica Fruit Extract: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Malva Sylvestris (Mallow) Flower Extract: Extremely safe In 2 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Malva Sylvestris (Mallow) Flower/Leaf/Stem Extract: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Mandelic Acid: Probably fine In 3 products; The slow-and-steady AHA. Big molecules, so it strolls into your skin instead of sprinting — the exfoliant for people who scare easily.
Manganese Violet (CI 77742): Extremely safe In 5 products; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
Mangifera Indica (Mango) Seed Butter: Extremely safe In 9 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Mangifera Indica (Mango) Seed Oil: Extremely safe In 2 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Mango Butter Dimer Dilinoleyl Esters/Dimer Dilinoleate Copolymer: Extremely safe In 1 product; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Mannitol: Extremely safe In 27 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Mannose: Extremely safe In 3 products; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
Maris Aqua (Sea Water): Extremely safe In 1 product; Water, with a passport. Some fancy water still counts as water.
Maris Aqua/Sea Water/Eau De Mer: Extremely safe In 3 products; Water, with a passport. Some fancy water still counts as water.
Maris Sal/Sea Salt/Sel Marin: Extremely safe In 3 products; A mineral salt playing supporting cast. Balances the formula and occasionally soothes, the way a good bassist holds the band together.; Also listed as: Maris Sal (Sea Salt, Sel Marin)
Matricaria Chamomilla (German Chamomile) Flower Oil: Probably fine In 1 product; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
May Contain: Red 21 (CI 45380)(Aka 223): Extremely safe In 1 product; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
May Contain: Titanium Dioxide (CI 77891) Iron Oxides (CI 77489, CI 77491, CI 77492, CI 77499) Ultramarines (CI 77007): Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
MDIMETHICONE: Extremely safe In 1 product; The ultimate Instagram filter in a bottle. Fills in texture so your skin looks like it's been airbrushed by a professional.
Meadowfoam Estolide: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Medicago Sativa (Alfalfa) Seed Extract: Extremely safe In 2 products; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Melaleuca Alternifolia (Tea Tree) Leaf Oil: Proceed with caution In 12 products; The blemish's arch-nemesis with a medicine-cabinet smell. Zaps spots, occasionally zaps your patience (and your barrier) too.
Melia Azadirachta Flower Extract: Extremely safe In 4 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Melia Azadirachta Leaf Extract: Extremely safe In 6 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Melia Azadirachta Seed Oil: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Melissa Officinalis Leaf Extract: Probably fine In 5 products; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
MENTHA ARVENSIS LEAF EXTRACT: Proceed with caution In 3 products; Spicy-fresh and proud of it. Wakes your face up the way a cold shower wakes up your soul — loudly.
Mentha Arvensis Leaf Oil: Proceed with caution In 11 products; The menthol-mint-spice squad. Feels invigorating for 10 seconds, then sensitive skin starts writing a complaint letter.
Mentha Haplocalix Extract: Proceed with caution In 2 products; The tingle-is-working myth in a bottle. That icy-hot zing is your skin saying 'ouch' in a refreshing accent.
Mentha Piperita (Peppermint) Flower/Leaf/Stem Extract: Proceed with caution In 1 product; Spicy-fresh and proud of it. Wakes your face up the way a cold shower wakes up your soul — loudly.
Mentha Piperita (Peppermint) Leaf Extract: Proceed with caution In 1 product; The tingle-is-working myth in a bottle. That icy-hot zing is your skin saying 'ouch' in a refreshing accent.
Mentha Piperita (Peppermint) Oil: Proceed with caution In 2 products; The tingle-is-working myth in a bottle. That icy-hot zing is your skin saying 'ouch' in a refreshing accent.
Mentha Viridis (Spearmint) Leaf Oil: Proceed with caution In 1 product; The menthol-mint-spice squad. Feels invigorating for 10 seconds, then sensitive skin starts writing a complaint letter.
Menthol: Proceed with caution In 16 products; The fake-cold molecule. Your skin feels icy because your nerves are being lied to. Refreshing for some, irritating for many.
Menthoxypropanediol: Proceed with caution In 5 products; Spicy-fresh and proud of it. Wakes your face up the way a cold shower wakes up your soul — loudly.
Menthyl Lactate: Proceed with caution In 4 products; The menthol-mint-spice squad. Feels invigorating for 10 seconds, then sensitive skin starts writing a complaint letter.
Menthyl Nicotinate: Proceed with caution In 1 product; The menthol-mint-spice squad. Feels invigorating for 10 seconds, then sensitive skin starts writing a complaint letter.
Methicone: Extremely safe In 2 products; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
METHIONINE: Extremely safe In 1 product; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
METHOXY PEG-114/POLYEPSILON CAPROLACTONE: Extremely safe In 7 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Methyl Gluceth-10: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Methyl Gluceth-20: Extremely safe In 9 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Methyl Gluceth-20 Benzoate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Methyl Glucose Sesquistearate: Extremely safe In 1 product; Basically candy chemistry repurposed for hydration. Wonka would approve.
METHYL METHACRYLATE CROSSPOLYMER: Extremely safe In 4 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
methyl methacrylatecrosspolymer: Extremely safe In 1 product; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
METHYL NICOTINATE: Proceed with caution In 2 products; The menthol-mint-spice squad. Feels invigorating for 10 seconds, then sensitive skin starts writing a complaint letter.
METHYL SALICYLATE: Proceed with caution In 1 product; Spicy-fresh and proud of it. Wakes your face up the way a cold shower wakes up your soul — loudly.
Methyl Trimethicone: Extremely safe In 12 products; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
Methylglucoside Phosphate: Extremely safe In 1 product; A natural moisturizing factor — basically your skin's built-in water bottle, refilled from outside.
Methylheptyl Isostearate: Extremely safe In 2 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Methylparaben: Extremely safe In 1 product; The most dragged preservative on the internet. Unfairly cast as the villain, actually keeps your products from growing a science project.
Methylpropanediol: Extremely safe In 23 products; The solvent that helps the good stuff dissolve and sink in. Unglamorous, essential, criminally underrated.
Mica: Extremely safe In 31 products; Crushed mineral glitter. The reason your highlighter can be seen from space.
Mica (CI 77019): Extremely safe In 6 products; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
MICA (CI 77019) TOFFEE & POPPY: [+/-] TITANIUM DIOXIDE (CI 77891): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Mica (CI 77019). May Contain: Iron Oxides (CI 77491, CI 77492, CI 77499): Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Microcitrus Australasica (Lime Pearl) Fruit Extract: Probably fine In 1 product; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Microcrystalline Cellulose: Extremely safe In 7 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Microcrystalline Wax (Cera Microcristallina): Extremely safe In 2 products; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.
Mimosa Tenuiflora Bark Extract: Extremely safe In 10 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Mineral oil: Extremely safe In 1 product; Baby-oil energy. Cosmetic-grade, ultra-pure, and less villainous than its internet reputation suggests.
Mineral Oil (Paraffinum Liquidum): Extremely safe In 2 products; Baby-oil energy. Cosmetic-grade, ultra-pure, and less villainous than its internet reputation suggests.
MONASCUS/RICE FERMENT: Extremely safe In 3 products; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
Montmorillonite: Extremely safe In 2 products; Mud with a résumé. Draws out oil and leaves your face feeling freshly power-washed.
Morinda Citrifolia Extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Morinda Citrifolia Fruit Extract: Extremely safe In 2 products; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Moringa Oil/Hydrogenated Moringa Oil Esters: Extremely safe In 5 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Moringa Oleifera (Moringa) Seed Oil: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Moringa Oleifera Seed Extract: Extremely safe In 3 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Moringa Oleifera Seed Oil: Extremely safe In 4 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Moringa Pterygosperma (Moringa) Seed Oil: Extremely safe In 4 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
MORUS ALBA LEAF EXTRACT: Extremely safe In 6 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Musa Sapientum (Banana) Flower Extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Musa Sapientum (Banana) Fruit Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Myrciaria Dubia Fruit Extract: Extremely safe In 2 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Myristamidopropyl PG-Dimonium Chloride Phosphate: Extremely safe In 1 product; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Myristic Acid: Extremely safe In 19 products; A fatty acid: a building block of your skin's own oil slick. Familiar face, good manners.
Myristoyl Pentapeptide-17: Extremely safe In 1 product; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
Myristyl Alcohol: Extremely safe In 4 products; A fatty alcohol. Makes creams thick and cushiony — the misunderstood sibling of drying alcohol.
Myristyl Myristate: Extremely safe In 3 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Myrothamnus Flabellifolia Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Myrothamnus Flabellifolia Leaf/Stem Extract: Extremely safe In 2 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.

N

N-Hydroxysuccinimide: Extremely safe In 3 products; A free-radical sponge. Mops up environmental damage before it turns into tomorrow's wrinkle.
N-Prolyl Palmitoyl Tripeptide-56 Acetate: Extremely safe In 1 product; A tiny text message to your skin cells that says 'please make more collagen.' Sometimes they read it. Results arrive on dial-up.
Nannochloropsis Gaditana Extract: Extremely safe In 1 product; Sea-vegetable skin food. The mermaid aesthetic, minus the fish tail.
Nannochloropsis Oculata Extract: Extremely safe In 1 product; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Naringenin: Extremely safe In 1 product; A free-radical sponge. Mops up environmental damage before it turns into tomorrow's wrinkle.
NATTO GUM: Extremely safe In 2 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
NELUMBO NUCIFERA FLOWER EXTRACT: Extremely safe In 14 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Nelumbo Nucifera Leaf Extract: Extremely safe In 1 product; Floral water-colour energy. Soft soothing, softer marketing.
Nelumbo Nucifera Root Extract: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
NELUMBO NUCIFERA SEED EXTRACT: Extremely safe In 1 product; Floral water-colour energy. Soft soothing, softer marketing.
Neopentyl Glycol Dicaprylate/Dicaprate: Extremely safe In 2 products; The solvent that helps the good stuff dissolve and sink in. Unglamorous, essential, criminally underrated.
Neopentyl Glycol Diethylhexanoate: Extremely safe In 3 products; A humectant glycol. Pulls water into your skin and keeps the formula smooth — the reliable roommate who always pays rent on time.
Neopentyl Glycol Diheptanoate: Extremely safe In 3 products; The behind-the-scenes stagehand. Keeps the formula slippery, hydrating, and preserved. You'll never notice it, which is the point.
Nephelium Lappaceum Leaf Extract: Probably fine In 1 product; An obscure botanical with a Latin name longer than a CVS receipt. Probably here to sound fancy; probably fine; plants do occasionally pick fights.
Niacin: Proceed with caution In 1 product; The tingle-is-working myth in a bottle. That icy-hot zing is your skin saying 'ouch' in a refreshing accent.
Niacinamide: Extremely safe In 81 products; The Swiss Army knife of skincare. Shrinks the look of pores, evens tone, behaves with everyone. Basically the friend everyone's parents love.
Niacinamide(15%): Probably fine In 1 product; Niacinamide at the 15% buffet. Usually a saint, but at this dose it can bring a surprise flush to the party.
nicotiana benthamiana hexapeptide-40 sh-oligopeptide-1: Extremely safe In 2 products; A tiny text message to your skin cells that says 'please make more collagen.' Sometimes they read it. Results arrive on dial-up.
nicotiana benthamiana octapeptide-30 sh-oligopeptide-2: Extremely safe In 1 product; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
NICOTINAMIDE MONONUCLEOTIDE: Extremely safe In 1 product; The Swiss Army knife of skincare's extended family. Steady, multitasking, rarely misbehaves.
Nigella Sativa (Black Cumin) Seed Oil: Extremely safe In 2 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Nigella Sativa Seed Extract: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Nigella Sativa Seed Oil: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Nordihydroguaiaretic Acid: Extremely safe In 1 product; An antioxidant preservative. Keeps the oils fresh so your cream doesn't smell like old crayons.
Nylon-12: Extremely safe In 3 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.

O

O-Cymen-5-Ol: Extremely safe In 2 products; A preservative: the formula's immune system. Without it, your cream would grow a beard within weeks.
O-Cymen5-Ol: Extremely safe In 1 product; A preservative: the formula's immune system. Without it, your cream would grow a beard within weeks.
Ocimum Basilicum (Basil) Flower/Leaf Extract: Probably fine In 1 product; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.
Ocimum Basilicum Hairy Root Culture Extract: Probably fine In 1 product; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.
Ocimum Sanctum (Holy Basil) Leaf Extract: Probably fine In 1 product; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.
Ocimum Sanctum Leaf Extract: Probably fine In 4 products; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Octadecyl Di-T-Butyl-4-Hydroxyhydrocinnamate: Extremely safe In 1 product; The bodyguard for the oils in the bottle. Takes oxidation bullets so the good stuff doesn't go rancid.
Octanediol: Extremely safe In 1 product; A humectant glycol. Pulls water into your skin and keeps the formula smooth — the reliable roommate who always pays rent on time.
Octocrylene: Probably fine In 1 product; The sunscreen filter that babysits avobenzone. Reliable UV shield, but occasionally a sensitive-skin sore spot.
Octocrylene (8.0%): Probably fine In 1 product; The sunscreen filter that babysits avobenzone. Reliable UV shield, but occasionally a sensitive-skin sore spot.
Octyldodecanol: Extremely safe In 27 products; A fatty alcohol. Makes creams thick and cushiony — the misunderstood sibling of drying alcohol.
Octyldodeceth-16: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
OCTYLDODECYL MYRISTATE: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Octyldodecyl Neopentanoate: Extremely safe In 5 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Octyldodecyl Stearoyl Stearate: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Octyldodecyl Xyloside: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Oenothera Biennis (Evening Primrose) Flower Extract: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Oenothera Biennis (Evening Primrose) Oil: Extremely safe In 7 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Oenothera Biennis (Evening Primrose) Seed Extract: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Olea Europaea (Olive) Fruit Oil: Extremely safe In 11 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Olea Europaea (Olive) Leaf Extract*: Extremely safe In 5 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.; Also listed as: Olea Europaea (Olive) Leaf Extract
Olea Europaea (Olive) Oil Unsaponifiables: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Oleanolic Acid: Extremely safe In 2 products; One of the fats your skin already makes. Showing up here feels like a family reunion.
Oleic Acid: Extremely safe In 6 products; A fatty acid: a building block of your skin's own oil slick. Familiar face, good manners.
Oleic Acid.[+/- (May Contain) Iron Oxides (Ci 77489, Ci 77491, Ci 77492, Ci 77499), Titanium Dioxide (Ci 77891), Ultramarines (Ci 77007)]: Extremely safe In 1 product; A fatty acid: a building block of your skin's own oil slick. Familiar face, good manners.
Oleic/Linoleic/Linoleic Polyglyceride: Extremely safe In 1 product; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Oleic/Linoleic/Linolenic Polyglycerides: Extremely safe In 2 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Oleth-20: Extremely safe In 2 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Oleyl Adapalenate: Proceed with caution In 1 product; Retinol's prescription-strength older sibling who went to med school. Brilliant results, zero patience for your excuses.
Oleyl Alcohol: Extremely safe In 1 product; The 'good' alcohol. A waxy, creamy fatty alcohol — nothing like the drying stuff in toner, despite the identical last name.
Oligopeptide-1: Extremely safe In 1 product; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
Oligopeptide-2: Extremely safe In 1 product; A tiny text message to your skin cells that says 'please make more collagen.' Sometimes they read it. Results arrive on dial-up.
Oligopeptide-3: Extremely safe In 1 product; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
Oligopeptide-10: Extremely safe In 1 product; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
Oligopeptide-68: Extremely safe In 1 product; A tiny text message to your skin cells that says 'please make more collagen.' Sometimes they read it. Results arrive on dial-up.
Olive Oil Decyl Esters: Extremely safe In 3 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Olive Oil PEG-7 Esters: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Olive Oil Polyglyceryl-6 Esters: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Olus Oil/Vegetable Oil/Huile Végétale: Extremely safe In 3 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Onopordum Acanthium Flower/Leaf/Stem Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
OPHIOPOGON JAPONICUS ROOT EXTRACT: Extremely safe In 3 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Opuntia Ficus-Indica (Prickly Pear) Fruit Extract: Extremely safe In 2 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Opuntia Ficus-Indica Stem Extract: Extremely safe In 4 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Opuntia Tuna Fruit Extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
opuntia vulgaris extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Opuntia Vulgaris Leaf Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Orange 5 (CI 45370)(Aka 201): Extremely safe In 1 product; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
Orbignya Oleifera Seed Oil: Extremely safe In 2 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Oryza Sativa (Rice) Bran Extract: Extremely safe In 10 products; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Oryza Sativa (Rice) Bran Oil: Extremely safe In 2 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
ORYZA SATIVA (RICE) BRAN WATER: Extremely safe In 5 products; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Oryza Sativa (Rice) Bran Wax: Extremely safe In 5 products; A wax: the structural backbone of lip balms and balms. Holds its shape so your stick doesn't melt in your pocket.
Oryza Sativa (Rice) Extract: Extremely safe In 7 products; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Oryza Sativa (Rice) Hull Powder: Probably fine In 1 product; A physical exfoliant. The tiny loofah army; use gently or it turns into a tiny sandblaster.
ORYZA SATIVA (RICE) POWDER: Extremely safe In 1 product; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
ORYZA SATIVA (RICE) SEED EXTRACT: Extremely safe In 1 product; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Oryza Sativa (Rice) Seed Water: Extremely safe In 2 products; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Oryza Sativa (Rice) Starch: Extremely safe In 4 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Oryza Sativa Bran Oil / Rice Bran Oil: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Osmanthus Fragrans Flower Extract: Extremely safe In 1 product; Floral water-colour energy. Soft soothing, softer marketing.
Ozokerite: Extremely safe In 4 products; A wax: the structural backbone of lip balms and balms. Holds its shape so your stick doesn't melt in your pocket.

P

p-Anisic Acid: Extremely safe In 2 products; Microbe security detail. You'll never thank it, but you'd definitely notice if it quit.
Padina Pavonica Thallus Extract: Extremely safe In 32 products; Sea-vegetable skin food. The mermaid aesthetic, minus the fish tail.
PAEONIA ALBIFLORA FLOWER EXTRACT: Extremely safe In 5 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
PAEONIA ALBIFLORA ROOT EXTRACT: Extremely safe In 5 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
PAEONIA LACTIF- LORA ROOT EXTRACT: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
PAEONIA LACTIFLORA ROOT EXTRACT: Extremely safe In 15 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Paeonia Suffruticosa RootExtract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Palmitic Acid: Extremely safe In 35 products; A fatty acid: a building block of your skin's own oil slick. Familiar face, good manners.
Palmitoyl Carnitine: Extremely safe In 1 product; A longevity-lab ingredient. Sounds like it belongs in a biohacker podcast, behaves like a gentle pep talk.
Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine: Extremely safe In 1 product; A tiny text message to your skin cells that says 'please make more collagen.' Sometimes they read it. Results arrive on dial-up.
Palmitoyl Dipeptide-5 Diaminohydroxybutyrate: Extremely safe In 1 product; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
Palmitoyl Glycine: Extremely safe In 2 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Palmitoyl Hydroxypropyltrimonium: Extremely safe In 1 product; A conditioning agent — basically fabric softener, but for skin and hair. Makes everything feel smooth and static-free.
Palmitoyl Pentapeptide-4: Extremely safe In 2 products; Matrixyl: the peptide that writes your skin a sternly worded memo about producing more collagen.
Palmitoyl Sh-Hexapeptide-13 Serine Sp Amide: Extremely safe In 2 products; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
Palmitoyl Tetrapeptide-7: Extremely safe In 19 products; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
Palmitoyl Tripeptide-1: Extremely safe In 23 products; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
Palmitoyl Tripeptide-5: Extremely safe In 10 products; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
Palmitoyl Tripeptide-8: Extremely safe In 2 products; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
PALMITOYL TRIPEPTIDE-38: Extremely safe In 2 products; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
PANAX GINSENG FLOWER EXTRACT: Extremely safe In 6 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
PANAX GINSENG LEAF/STEM EXTRACT: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
PANAX GINSENG ROOT EXTRACT: Extremely safe In 23 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
PANAX GINSENG ROOT WATER: Extremely safe In 4 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
PANAX GINSENG SEED OIL: Extremely safe In 2 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
PANTETHINE: Extremely safe In 1 product; Vitamin B5's extended family: hydrating, soothing, and allergic to drama.
Panthenol: Extremely safe In 80 products; Vitamin B5: the cozy sweatpants of skincare. Hydrates, soothes, and never once asks you to try harder.
Panthenyl Triacetate: Extremely safe In 1 product; Vitamin B5's extended family: hydrating, soothing, and allergic to drama.
Pantolactone: Extremely safe In 7 products; Vitamin B5's extended family: hydrating, soothing, and allergic to drama.
Pantothenic Acid: Extremely safe In 2 products; Vitamin B5's extended family: hydrating, soothing, and allergic to drama.
Papain: Probably fine In 7 products; An enzyme exfoliant — basically a tiny Pac-Man that eats dead skin. Effective, but it doesn't always check whether the skin is dead first.
Papaver Rhoeas (Red Poppy) Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Paraffin: Extremely safe In 2 products; An occlusive seal. Basically shrink-wrap for hydration.
Paraffinum Liquidum: Extremely safe In 2 products; Baby-oil energy. Cosmetic-grade, ultra-pure, and less villainous than its internet reputation suggests.
Paraffinum Liquidum/Mineral Oil/Huile Minérale: Extremely safe In 1 product; Baby-oil energy. Cosmetic-grade, ultra-pure, and less villainous than its internet reputation suggests.
Parfum: Proceed with caution In 1 product; The mystery box. 'Fragrance' can legally hide dozens of undisclosed chemicals — smells like a spa, sometimes acts like a mugger.
Parfum (Fragrance): Proceed with caution In 7 products; The secret recipe nobody has to disclose. Makes the jar smell expensive; the #1 reason sensitive skin throws a tantrum.; Also listed as: PARFUM / FRAGRANCE; Parfum/Fragrance
Parietaria Officinalis Extract: Extremely safe In 2 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Passiflora Edulis Seed Oil: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Passiflora Incarnata Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
PCA: Extremely safe In 8 products; A humectant that grabs water from the air and parks it in your skin. Like a dehumidifier, but in reverse and flattering.
Pca Dimethicone: Extremely safe In 2 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Peat Extract: Extremely safe In 1 product; Mud with a résumé. Draws out oil and leaves your face feeling freshly power-washed.
PECTIN: Extremely safe In 3 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
PEG-6: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
PEG-6 Caprylic/Capric Glycerides: Extremely safe In 4 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
PEG-6 Cocamide: Extremely safe In 1 product; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
PEG-7 GLYCERYL COCOATE: Extremely safe In 2 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
PEG-8: Extremely safe In 5 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
PEG-8 Beeswax: Extremely safe In 6 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
PEG-8 ISOSTEARATE: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Peg-8 Stearate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PEG-9 Polydimethylsiloxyethyl Dimethicone: Extremely safe In 6 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
PEG-10: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
PEG-10 Dimethicone: Extremely safe In 12 products; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
PEG-10 Stearate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PEG-12 Dimethicone: Extremely safe In 2 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
PEG-12 Dimethicone/PPG-20 Crosspolymer: Extremely safe In 1 product; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
PEG-14M: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
PEG-18 Glyceryl Oleate/Cocoate: Extremely safe In 1 product; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
PEG-20 GLYCERYL TRIISOSTEARATE: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Peg-20 Stearate: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
PEG-30 DIPOLYHYDROXYSTEARATE: Extremely safe In 3 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
PEG-32: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
PEG-40 Hydrogenated Castor Oil: Extremely safe In 10 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PEG-40 STEARATE: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
PEG-45M: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
PEG-60 Almond Glycerides: Extremely safe In 3 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
PEG-60 Hydrogenated Castor Oil: Extremely safe In 3 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PEG-75: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PEG-75 Stearate: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
PEG-90M: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
PEG-100: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
PEG-100 Stearate: Extremely safe In 25 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PEG-120 Methyl Glucose Dioleate: Extremely safe In 6 products; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
PEG-150 Pentaerythrityl Tetrastearate Inulin: Extremely safe In 1 product; Basically candy chemistry repurposed for hydration. Wonka would approve.
PEG-200 HYDROGENATED GLYCERYL PALMATE: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PEG/PPG-18/18 Dimethicone: Extremely safe In 5 products; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.; Also listed as: PEG/ PPG-18/18 Dimethicone
PEG/PPG20/15 Dimethicone: Extremely safe In 1 product; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
PEG40 Hydrogenated Castor Oil: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Pelargonium Capitatum Leaf Extract: Probably fine In 1 product; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Pelargonium Graveolens Flower Oil: Probably fine In 27 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Pelargonium Graveolens Oil: Probably fine In 5 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Pelvetia Canaliculata Extract: Extremely safe In 1 product; Sea-vegetable skin food. The mermaid aesthetic, minus the fish tail.
Pentaerythrityl Distearate: Extremely safe In 2 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
PENTAERYTHRITYL TETRA-DI-T-BU- TYL HYDROXYHYDROCINNAMATE: Extremely safe In 1 product; The bodyguard for the oils in the bottle. Takes oxidation bullets so the good stuff doesn't go rancid.
Pentaerythrityl Tetra-Di-T-Butyl: Extremely safe In 1 product; An antioxidant preservative. Keeps the oils fresh so your cream doesn't smell like old crayons.
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate: Extremely safe In 22 products; The bodyguard for the oils in the bottle. Takes oxidation bullets so the good stuff doesn't go rancid.
Pentaerythrityl Tetraethylhexanoate: Extremely safe In 8 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Pentaerythrityl Tetraisostearate: Extremely safe In 3 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Pentylene Glycol: Extremely safe In 96 products; A moisturizing glycol with a side hustle in keeping microbes away. Silent, efficient, never late.
Pentylene Gycol: Extremely safe In 1 product; A moisturizing glycol with a side hustle in keeping microbes away. Silent, efficient, never late.
Perlite: Probably fine In 2 products; A physical exfoliant. The tiny loofah army; use gently or it turns into a tiny sandblaster.
Persea Gratissima (Avocado) Butter: Extremely safe In 2 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Persea Gratissima (Avocado) Oil: Extremely safe In 20 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Petrolatum: Extremely safe In 3 products; Vaseline: the raincoat of skincare. Sits on top, refuses to let moisture escape, and slugging fans treat it like a religion.
Petroleum Resin: Extremely safe In 2 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Pfaffia Paniculata (Brazilian Ginseng) Root Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Pfaffia Paniculata Root Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Phaeodactylum Tricornutum Extract: Extremely safe In 1 product; Sea-vegetable skin food. The mermaid aesthetic, minus the fish tail.
Phaseolus Angularis Seed Extract: Extremely safe In 4 products; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
PHELLODENDRON AMURENSE BARK EXTRACT: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Phenethyl Alcohol: Extremely safe In 2 products; The bouncer that keeps bacteria and mold out of the club. Unglamorous, essential, and the reason your moisturizer isn't fuzzy.
Phenethyl Alcohol. May Contain: Titanium Dioxide (CI 77891): Extremely safe In 2 products; The bouncer that keeps bacteria and mold out of the club. Unglamorous, essential, and the reason your moisturizer isn't fuzzy.
Phenox yethanol: Extremely safe In 1 product; The world's most common preservative. Gets dragged online every few years, keeps saving your moisturizer from turning into a petri dish anyway.
Phenoxyethano: Extremely safe In 1 product; The world's most common preservative. Gets dragged online every few years, keeps saving your moisturizer from turning into a petri dish anyway.
Phenoxyethanol: Extremely safe In 146 products; The world's most common preservative. Gets dragged online every few years, keeps saving your moisturizer from turning into a petri dish anyway.; Also listed as: PHENOXYETHANOL ●; Phenoxyethanol.
Phenyl Trimethicone: Extremely safe In 16 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Phenylalanine: Extremely safe In 3 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Phenylethyl Resorcinol: Probably fine In 2 products; A dark-spot fader with a chemistry-teacher name. Usually fine; sensitive skin occasionally files a complaint.
Phenylpropanol: Extremely safe In 8 products; Microbe security detail. You'll never thank it, but you'd definitely notice if it quit.
Phoenix Dactylifera (Date) Fruit Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Phosphatidylcholine: Extremely safe In 12 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Phospholipids: Extremely safe In 8 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Physalis Pubescens Fruit Juice: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Phytic Acid: Extremely safe In 16 products; A metal-grabber that keeps the formula stable and fresh. The formula's water softener.
Phytol: Probably fine In 1 product; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Phytosphingosine: Extremely safe In 12 products; The bricklayer of your skin barrier. Shows up, fills the cracks, goes home. No hype, just walls.
Phytosphingosine Cholesterol: Extremely safe In 1 product; The bricklayer of your skin barrier. Shows up, fills the cracks, goes home. No hype, just walls.
Phytosterols: Extremely safe In 12 products; The bricklayer of your skin barrier. Shows up, fills the cracks, goes home. No hype, just walls.
PHYTOSTERYL ISOSTEARYL DIMER DILINOLEATE: Extremely safe In 2 products; Barrier mortar. Literally the same stuff your skin uses to hold itself together — think spackle, but flattering.
Phytosteryl Macadamiate: Extremely safe In 1 product; Skin-identical lipid. Your barrier sees it and goes, 'oh hey, it's one of us.'
Phytosteryl Oleate: Extremely safe In 1 product; The bricklayer of your skin barrier. Shows up, fills the cracks, goes home. No hype, just walls.
PHYTOSTERYL/BEHENYL/OCTYLDODECYL LAUROYL GLUTAMATE: Extremely safe In 3 products; Skin-identical lipid. Your barrier sees it and goes, 'oh hey, it's one of us.'
PHYTOSTERYL/OCTYLDODECYL LAUROYL GLUTAMATE: Extremely safe In 2 products; The bricklayer of your skin barrier. Shows up, fills the cracks, goes home. No hype, just walls.
Pimpinella Anisum (Anise) Seed Extract: Probably fine In 1 product; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Pinene: Proceed with caution In 7 products; The perfume counter's favorite troublemaker. Gorgeous smell, known contact allergen, especially once it oxidizes.
PINUS DENSIFLORA LEAF EXTRACT: Extremely safe In 2 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
PINUS KORAIENSIS SEED OIL: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Pinus Palustris Leaf Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Pinus Palustris Oil: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Pinus Pinaster Bark Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Pinus Strobus (Pine) Bark Extract: Extremely safe In 3 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Pinus Strobus (Pine) Bark Extract. May Contain: Iron Oxides (Ci 77489, Ci 77491, Ci 77492, Ci 77499): Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Pinus Strobus Bark Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Pinus Sylvestris Cone Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Piper Nigrum (Pepper) Seed Extract: Probably fine In 1 product; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Piper Nigrum Seed Extract: Probably fine In 1 product; Kitchen-spice-rack energy. Antioxidants with a side of 'hm, is this tingling?'
Pistacia Lentiscus (Mastic) Gum: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Pisum Sativum (Pea) Extract: Extremely safe In 2 products; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Plankton Extract: Extremely safe In 4 products; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Plantagineum Seed Oil: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Plantago Lanceolata Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Plumeria Alba Flower Extract: Extremely safe In 2 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Plumeria Rubra Flower Extract: Extremely safe In 3 products; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Pogostemon Cablin Leaf Oil: Probably fine In 2 products; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Pogostemon Cablin Oil: Probably fine In 2 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
POLOXAMER 338: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Polyacryla- mide: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Polyacrylamide: Extremely safe In 3 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Polyacrylate Crosspolymer-6: Extremely safe In 20 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Polyacrylate-13: Extremely safe In 18 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Polyacrylate-33: Extremely safe In 2 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Polyamide-3: Extremely safe In 1 product; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Polybutene: Extremely safe In 7 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
POLYCAPROLACTONE: Extremely safe In 1 product; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Polydextrose: Extremely safe In 1 product; Sugar for your face, the zero-calorie kind. Pulls in moisture and makes everything feel a little sweeter.
POLYESTER-1: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Polyester-7: Extremely safe In 1 product; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Polyethylene: Extremely safe In 6 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Polyglutamic Acid: Extremely safe In 5 products; Natto-derived moisture film that reportedly holds even more water than hyaluronic acid. HA's overachieving cousin from Japan.
Polyglyc- eryl-3 Diisostearate: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Polyglycerin-3: Extremely safe In 7 products; The OG moisture magnet's extended family. Pulls in water, makes zero fuss.
Polyglycerin-6: Extremely safe In 3 products; The OG moisture magnet's extended family. Pulls in water, makes zero fuss.
Polyglycerin-10: Extremely safe In 1 product; The OG moisture magnet's extended family. Pulls in water, makes zero fuss.
Polyglyceryl-2 Caprate: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Polyglyceryl-2 Diisostearate: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Polyglyceryl-2 Dipolyhydroxystearate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Polyglyceryl-2 Distearate: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Polyglyceryl-2 Isostearate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Polyglyceryl-2 Stearate: Extremely safe In 2 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
POLYGLYCERYL-2 TRIISOSTEARATE: Extremely safe In 2 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Polyglyceryl-3 Beeswax: Extremely safe In 4 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Polyglyceryl-3 Cocoate: Extremely safe In 1 product; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Polyglyceryl-3 Diisostearate: Extremely safe In 11 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Polyglyceryl-3 Distearate: Extremely safe In 2 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Polyglyceryl-3 Laurate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Polyglyceryl-3 Methylglucose Distearate: Extremely safe In 17 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
polyglyceryl-3 oleate: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone: Extremely safe In 1 product; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Polyglyceryl-3 Polyricinoleate: Extremely safe In 4 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Polyglyceryl-3 Stearate: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Polyglyceryl-4 Caprate: Extremely safe In 6 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Polyglyceryl-4 Caprylate/Caprate: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
POLYGLYCERYL-4 DIISOSTEARATE/POLYHYDROXYSTEARATE/SEBACATE: Extremely safe In 3 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Polyglyceryl-4 Isostearate: Extremely safe In 5 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Polyglyceryl-4 Laurate: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Polyglyceryl-4 Laurate/Seba- cate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Polyglyceryl-4 Oleate: Extremely safe In 2 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Polyglyceryl-6 Behenate: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Polyglyceryl-6 Caprylate: Extremely safe In 4 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
POLYGLYCERYL-6 DICAPRATE: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Polyglyceryl-6 Distearate: Extremely safe In 4 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Polyglyceryl-6 Laurate: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Polyglyceryl-6 Polyricinoleate: Extremely safe In 2 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Polyglyceryl-6 Ricinoleate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Polyglyceryl-6 Stearate: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Polyglyceryl-10 Laurate: Extremely safe In 16 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Polyglyceryl-10 Myristate: Extremely safe In 5 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Polyglyceryl-10 Oleate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
POLYGLYCERYL-10 PENTAISOSTEARATE: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Polyglyceryl-10 Stearate: Extremely safe In 9 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
POLYGONATUM ODORATUM RHIZOME EXTRACT: Extremely safe In 14 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Polyhydroxystearic Acid: Extremely safe In 16 products; A fatty acid: a building block of your skin's own oil slick. Familiar face, good manners.
Polyisobutene: Extremely safe In 23 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Polyisobutylene: Extremely safe In 2 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Polylactic Acid: Probably fine In 1 product; A fruit-acid sidekick. Usually here in small amounts to brighten or balance — rarely the star, occasionally a tiny bit spicy.
Polylysine: Extremely safe In 2 products; The bouncer that keeps bacteria and mold out of the club. Unglamorous, essential, and the reason your moisturizer isn't fuzzy.
Polymethyl Methacrylate: Extremely safe In 2 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Polymethylsilsesquioxane: Extremely safe In 12 products; The blurring powder. Soft-focus filter in physical form — absorbs shine and pretends your pores are an urban legend.
Polypeptide: Extremely safe In 1 product; Short amino-acid chain with big promises. Gentle, slow, and the reason your eye cream costs what it costs.
Polypropylsilsesquioxane: Extremely safe In 2 products; A powder that makes formulas feel velvety. The 'real-life Instagram filter' you can touch.
Polyquaternium 73: Extremely safe In 2 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.; Also listed as: Polyquaternium-73
Polyquaternium-4: Extremely safe In 1 product; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Polyquaternium-7: Extremely safe In 5 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Polyquaternium-10: Extremely safe In 3 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
POLYQUATERNIUM-22: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Polyquaternium-39: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Polyquaternium-51: Extremely safe In 4 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Polyquaternium-80: Extremely safe In 6 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Polysilicone-11: Extremely safe In 16 products; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
Polysilicone-11, 1,2-Hexanediol: Extremely safe In 1 product; A humectant glycol. Pulls water into your skin and keeps the formula smooth — the reliable roommate who always pays rent on time.
Polysorbate 20: Extremely safe In 66 products; The peacemaker that makes oils dissolve into water. Your toner is clear instead of a lava lamp because of this guy.
Polysorbate 60: Extremely safe In 32 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Polysorbate 80: Extremely safe In 5 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Polysorbate 85: Extremely safe In 2 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Polyuethane film: Extremely safe In 1 product; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Polyurethane Crosspolymer-1: Extremely safe In 1 product; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Polyurethane Film: Extremely safe In 2 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Polyvinyl Alcohol: Extremely safe In 6 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Pongamia Pinnata Seed Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Poria Cocos Extract: Extremely safe In 2 products; Fungi with a glow-up. Hydrating, soothing, and the reason your serum shelf is starting to look like a forest floor.
Poria Cocos Polysaccharide: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Poria Cocos Sclerotium Extract: Extremely safe In 2 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Porphyra Umbilicalis Extract: Extremely safe In 2 products; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Porphyridium Cruentum Extract: Extremely safe In 6 products; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
PORTULACA PILOSA EXTRACT: Probably fine In 2 products; An obscure botanical with a Latin name longer than a CVS receipt. Probably here to sound fancy; probably fine; plants do occasionally pick fights.
Potassium Azeloyl Diglycinate: Extremely safe In 1 product; Azelaic acid's water-friendly, less-tingly cousin. Calms redness without the opening-night drama.
Potassium Cetyl Phosphate: Extremely safe In 11 products; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Potassium Chloride: Extremely safe In 9 products; A mineral salt playing supporting cast. Balances the formula and occasionally soothes, the way a good bassist holds the band together.
Potassium Citrate: Extremely safe In 1 product; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Potassium Cocoate: Extremely safe In 1 product; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Potassium Cocoyl Glycinate: Extremely safe In 4 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Potassium Hyaluronate: Extremely safe In 5 products; A thirsty sponge that drinks 1,000x its weight in water. Fantastic for plumping your face, assuming you don't live in a literal desert where it will just pull the water out of your soul instead.
Potassium Hydroxide: Extremely safe In 13 products; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Potassium Lactate: Extremely safe In 2 products; A humectant that grabs water from the air and parks it in your skin. Like a dehumidifier, but in reverse and flattering.
POTASSIUM MAGNESIUM ASPARTATE: Extremely safe In 1 product; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Potassium Palmitoyl Hydrolyzed Oat Protein: Extremely safe In 1 product; Breakfast for your face. The same oats your grandmother put in an itchy-kid bath, now in a fancy bottle.
Potassium Phosphate: Extremely safe In 5 products; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Potassium Sorbate: Extremely safe In 84 products; A food-grade preservative that also keeps your cheese from growing fur. Your cream is in good company.
Potassium Sorbate. [+/- Titanium Dioxide (CI 77891), Iron Oxides (CI 77491, CI 77492, CI 77499)]: Extremely safe In 1 product; A food-grade preservative that also keeps your cheese from growing fur. Your cream is in good company.
POTASSIUM SORBATE. MAY CONTAIN / PEUT CONTENIR (+/-): TITANIUM DIOXIDE (CI 77891): Extremely safe In 1 product; A food-grade preservative that also keeps your cheese from growing fur. Your cream is in good company.
Potassium Sorbate. May Contain: Iron Oxides (CI 77491, CI 77492, CI 77499): Extremely safe In 1 product; A food-grade preservative that also keeps your cheese from growing fur. Your cream is in good company.
Potassium Sorbate. May Contain: Titanium Dioxide (CI 77891): Extremely safe In 1 product; A food-grade preservative that also keeps your cheese from growing fur. Your cream is in good company.
Potassium Stearate: Extremely safe In 3 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Potato Starch Modified: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
PPG-2 Hydroxyethyl Cocamide: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
PPG-2 Hydroxyethyl Coco/Isostearamide: Extremely safe In 2 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PPG-2 Isoceteth-20 Acetate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PPG-5-Ceteth-20: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
PPG-12/SMDI Copolymer: Extremely safe In 3 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
PPG-13-DECYLTETRADECETH-24: Extremely safe In 4 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
PPG-15 Stearyl Ether: Extremely safe In 2 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PPG-15 Stearyl Ether Benzoate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PPG-24-Glycereth-24: Extremely safe In 3 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PPG-24Glycereth-24: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
PPG-33-Buteth-45: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
PPG24-Glycereth-24: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Primula Veris Extract: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Proline: Extremely safe In 10 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Prolyl Hydroxyproline: Extremely safe In 2 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Propanediol: Extremely safe In 139 products; Corn-derived glycol with a clean-beauty halo. Basically butylene glycol after a farmers' market makeover.
Propanediol Dicaprylate/Caprate: Extremely safe In 1 product; A humectant glycol. Pulls water into your skin and keeps the formula smooth — the reliable roommate who always pays rent on time.
Propanol: Proceed with caution In 1 product; The quick-dry party guest. Makes products feel light and fresh, then leaves with your skin's moisture in its pocket.
Propolis Extract: Probably fine In 7 products; Bee glue. Bees use it to seal their hives; you use it to calm breakouts. Hard pass if you react to bee stuff.
Propyl Gallate: Extremely safe In 1 product; An antioxidant preservative. Keeps the oils fresh so your cream doesn't smell like old crayons.
Propylene Carbonate: Extremely safe In 21 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Propylene Carbonate May Contain: Mica: Extremely safe In 1 product; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Propylene Glycol: Probably fine In 21 products; A classic humectant with a reputation. Hydrates and helps things sink in, but a small fan club of sensitive skin types swear it makes them itchy.
PROPYLENE GLYCOL ALGINATE: Extremely safe In 1 product; The behind-the-scenes stagehand. Keeps the formula slippery, hydrating, and preserved. You'll never notice it, which is the point.
Propylene Glycol Dicaprylate/Dicaprate: Extremely safe In 3 products; The solvent that helps the good stuff dissolve and sink in. Unglamorous, essential, criminally underrated.
Propylene Glycol Stearate: Extremely safe In 2 products; The behind-the-scenes stagehand. Keeps the formula slippery, hydrating, and preserved. You'll never notice it, which is the point.
Propylheptyl Caprylate: Extremely safe In 2 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
PROTEASE: Probably fine In 7 products; An enzyme exfoliant — basically a tiny Pac-Man that eats dead skin. Effective, but it doesn't always check whether the skin is dead first.
Prunus Amygdalus Amara (Bitter Almond) Kernel Oil: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Prunus Amygdalus Dulcis (Sweet Almond) Oil: Extremely safe In 19 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Prunus Armeniaca (Apricot) Fruit Extract: Extremely safe In 2 products; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Prunus Armeniaca (Apricot) Kernel Oil: Extremely safe In 4 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Prunus Armeniaca Kernel Oil / Apricot Kernel Oil: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Prunus Domestica Fruit Extract: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Prunus Domestica Seed Oil: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
PRUNUS MUME EXTRACT: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
PRUNUS MUME FRUIT EXTRACT: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
PRUNUS MUME SEED EXTRACT: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Pseudoalteromonas Ferment Extract: Extremely safe In 1 product; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
pterocarpus marsupium bark extract: Extremely safe In 2 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Ptychopetalum Olacoides Bark/Stem Extract: Extremely safe In 2 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
PUERARIA LOBATA ROOT EXTRACT: Extremely safe In 4 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Pullulan: Extremely safe In 9 products; Sugar for your face, the zero-calorie kind. Pulls in moisture and makes everything feel a little sweeter.
Punica Granatum (Pomegranate) Extract: Extremely safe In 5 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.; Also listed as: Punica Granatum (Pomegranate) Extract*
Punica Granatum (Pomegranate) Seed Extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Punica Granatum (Pomegranate) Seed Oil: Extremely safe In 3 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.; Also listed as: Punica Granatum (Pomegranate) Seed Oil*
Punica Granatum Flower Extract: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Punica Granatum Fruit Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Punica Granatum Pericarp Extract: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Punica Granatum Seed Oil: Extremely safe In 6 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
PVM/MA Copolymer: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
PVM/MA Decadiene Crosspolymer: Extremely safe In 1 product; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
PVP: Extremely safe In 6 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Pyridoxine Hci: Extremely safe In 1 product; Vitamin-shelf support staff. Small dose, steady work, no fan club required.
Pyrus Communis (Pear) Fruit Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Pyrus Communis (Pear) Water: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Pyrus Malus (Apple) Fruit Extract: Extremely safe In 10 products; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Pyrus Malus (Apple) Fruit Water: Extremely safe In 3 products; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Pyrus Malus (Apple) Seed Extract: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.

Q

Quartz: Probably fine In 1 product; The scrub particle. Sandpaper with a spa membership — great for texture, terrible if you go at it like you're refinishing a deck.
Quaternium-75: Extremely safe In 1 product; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Quaternium-90 Bentonite: Extremely safe In 5 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Quercetin Dihydrate: Extremely safe In 1 product; Vitamin-shelf support staff. Small dose, steady work, no fan club required.
Quercus Robur Bark Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Quillaja Saponaria Bark Extract: Extremely safe In 3 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.

R

Raffinose: Extremely safe In 1 product; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
Raphanus Sativus (Radish) Root Extract: Extremely safe In 11 products; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.; Also listed as: Raphanus Sativus (Radish) Root Extract.
Raphanus Sativus (Radish) Seed Extract: Extremely safe In 2 products; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Raspberry Ketone: Extremely safe In 3 products; Vitamin-shelf support staff. Small dose, steady work, no fan club required.
RED 6 (CI 15850): Extremely safe In 2 products; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Red 6 Lake (CI 15850): Extremely safe In 1 product; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
Red 6 Lake (CI 15850)(Aka 201): Extremely safe In 2 products; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
RED 7 LAKE (CI 15850): Extremely safe In 4 products; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.; Also listed as: Red 7 Lake CI 15850
Red 7 Lake (CI 15850)(Aka 202): Extremely safe In 3 products; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
RED 22 LAKE (CI 45380): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
RED 22 LAKE (CI 45380) ALL OTHER SHADES: [+/-] TITANIUM DIOXIDE (CI 77891): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Red 27 (CI 45410): Extremely safe In 2 products; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Red 27 Lake (CI 45410): Extremely safe In 3 products; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
RED 28 LAKE (CI 45410): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
RED 30 (CI 73360): Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Red 30 Lake (CI 73360): Extremely safe In 5 products; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
RED 33 (CI 17200): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Red Iron Oxide (CI 77491): Extremely safe In 2 products; Makeup's paint box. Zero skincare benefit, maximum 'ooh, pretty' benefit.
REHMANNIA GLU-TINOSA ROOT EXTRACT: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
REHMANNIA GLUTINOSA ROOT EXTRACT: Extremely safe In 13 products; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Resveratrol: Extremely safe In 1 product; The red-wine antioxidant — all the anti-aging talk, none of the hangover.
Retinol: Proceed with caution In 20 products; The tough-love personal trainer of skincare. Will make you cry and peel for two weeks, but you’ll thank them when you look 22 forever.
Retinyl Linoleate: Probably fine In 3 products; Retinol's chill cousin who does yoga. Same long-game anti-aging goals, far fewer peeling meltdowns.
Retinyl Palmitate: Probably fine In 2 products; Retinol's very chill grandparent. Same family, but so gentle it mostly naps in the bottle.
Retinyl Propionate: Probably fine In 1 product; Retinol's chill cousin who does yoga. Same long-game anti-aging goals, far fewer peeling meltdowns.
Rhamnoides Seed Oil: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Rhizobian Gum: Extremely safe In 8 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Rhus Verniciflua Peel Wax: Extremely safe In 1 product; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.
Ribes Nigrum (Black Currant) Bud Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Ribes Nigrum (Black Currant) Seed Oil: Extremely safe In 3 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
RICE FERMENT FILTRATE (SAKE): Extremely safe In 1 product; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
Rice Oil Glycereth-8 Esters: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Ricinoleth-40: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Ricinus Communis (Castor) Seed Oil: Extremely safe In 15 products; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Rosa Alba Flower Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Rosa Canina (Rose Hips) Fruit Extract: Extremely safe In 1 product; Rosehip oil: the natural glow-getter with trace vitamin A. Your skin's favorite farmers' market buy.
Rosa Canina (Rosehips) Fruit Extract: Extremely safe In 3 products; Rosehip oil: the natural glow-getter with trace vitamin A. Your skin's favorite farmers' market buy.; Also listed as: Rosa Canina (Rosehips) Fruit Extract*
Rosa Canina (Rosehips) Fruit Oil: Extremely safe In 1 product; Rosehip oil: the natural glow-getter with trace vitamin A. Your skin's favorite farmers' market buy.
Rosa Canina Fruit Oil: Extremely safe In 4 products; Rosehip oil: the natural glow-getter with trace vitamin A. Your skin's favorite farmers' market buy.
Rosa Canina Seed Oil: Extremely safe In 1 product; Rosehip oil: the natural glow-getter with trace vitamin A. Your skin's favorite farmers' market buy.
Rosa Centifolia (Rose) Flower Extract: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Rosa Centifolia Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Rosa Centifolia Flower Extract: Extremely safe In 2 products; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Rosa Centifolia Flower Water: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Rosa Centifolia Flower Wax: Extremely safe In 1 product; A wax: the structural backbone of lip balms and balms. Holds its shape so your stick doesn't melt in your pocket.
Rosa Damascena (Rose) Flower Wax: Extremely safe In 1 product; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.
Rosa Damascena Extract: Extremely safe In 4 products; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Rosa Damascena Flower: Extremely safe In 2 products; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Rosa Damascena Flower Extract: Extremely safe In 7 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Rosa Damascena Flower Oil: Probably fine In 9 products; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Rosa Damascena Flower Water: Extremely safe In 3 products; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Rosa Damascena Flower Wax: Extremely safe In 1 product; The raincoat. Sits on top of your skin and refuses to let moisture escape. Slugging enthusiasts worship it.
Rosa Hybrid Flower Water: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Rosa Multiflora Flower Wax: Extremely safe In 2 products; An occlusive seal. Basically shrink-wrap for hydration.
Rose Extract: Extremely safe In 3 products; Floral water-colour energy. Soft soothing, softer marketing.
Rose Flower Oil/Extract: Probably fine In 2 products; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Rose Flower Oil/Extract (Rosa Damascena Flower Oil): Probably fine In 1 product; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Rosin: Proceed with caution In 1 product; The menthol-mint-spice squad. Feels invigorating for 10 seconds, then sensitive skin starts writing a complaint letter.
Rosmarinus Officinalis (Rosemary) Flower/ Leaf/Stem Extract: Probably fine In 2 products; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.; Also listed as: Rosmarinus Officinalis (Rosemary) Flower/Leaf/Stem Extract
Rosmarinus Officinalis (Rosemary) Leaf Extract: Probably fine In 33 products; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.; Also listed as: Rosmarinus Officinalis (Rosemary) Leaf Extract*
Rosmarinus Officinalis (Rosemary) Leaf Oil: Probably fine In 16 products; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Royal Jelly: Probably fine In 1 product; The bee queen's private smoothie. Luxurious, nourishing, and only for those whose skin gets along with the hive.
Royal Jelly Extract: Probably fine In 2 products; The bee queen's private smoothie. Luxurious, nourishing, and only for those whose skin gets along with the hive.
RUBUS CHAMAEMORUS SEED EXTRACT: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Rubus Fruticosus (Blackberry) Fruit Extract: Extremely safe In 4 products; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Rubus Idaeus (Raspberry) Fruit Extract: Extremely safe In 6 products; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Rubus Idaeus (Raspberry) Seed Oil: Extremely safe In 4 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Rubus Idaeus (Red Raspberry) Seed Oil: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Rubus Laciniatus (Blackberry) Seed Oil: Extremely safe In 2 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Rubus Villosus (Blackberry) Fruit Extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.

S

S-Palmitoylglutathione: Extremely safe In 5 products; Vitamin-shelf support staff. Small dose, steady work, no fan club required.
Saccharide Isomerate: Extremely safe In 13 products; A natural moisturizing factor — basically your skin's built-in water bottle, refilled from outside.
Saccharomyces Cerevisiae (Yeast) Extract: Extremely safe In 2 products; A ferment: microbes did the cooking, your skin gets the leftovers. Delicious, apparently.
Saccharomyces Cerevisiae Extract: Extremely safe In 1 product; A ferment: microbes did the cooking, your skin gets the leftovers. Delicious, apparently.
Saccharomyces Ferment: Extremely safe In 2 products; The kombucha of skincare. Bacteria and yeast that ate something healthy and left behind a souvenir your skin happens to love.
Saccharomyces Ferment Filtrate: Extremely safe In 1 product; The kombucha of skincare. Bacteria and yeast that ate something healthy and left behind a souvenir your skin happens to love.
Saccharomyces Ferment Lysate Filtrate: Extremely safe In 3 products; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
Saccharomyces Lysate Extract: Extremely safe In 1 product; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
Saccharomyces/Rice Ferment Filtrate: Extremely safe In 3 products; Probiotic-adjacent skin food. The sourdough starter of the beauty aisle.
Saccharomyces/Xylinum/Black TEA Ferment: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Saccharum Officinarum (Sugar Cane) Extract: Extremely safe In 1 product; Basically candy chemistry repurposed for hydration. Wonka would approve.
Saccharum Officinarum (Sugarcane) Extract: Extremely safe In 3 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Salicornia Herbacea Extract: Extremely safe In 2 products; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Salicylic Acid: Proceed with caution In 14 products; The pore janitor. Oil-soluble, so it crawls down into blackheads with a mop — just don't expect it to be gentle on a dry, flaky day.
Salix Alba (Willow) Bark Extract: Probably fine In 4 products; Salicylic acid's polite younger relative. Unclogs a bit, calms a bit, and texts before coming over.
Salix Alba (Willow) Bark Water: Probably fine In 5 products; Salicylic acid's polite younger relative. Unclogs a bit, calms a bit, and texts before coming over.
Salix Nigra (Willow) Bark Extract: Probably fine In 2 products; Salicylic acid's polite younger relative. Unclogs a bit, calms a bit, and texts before coming over.
Salvia Hispanica (Chia) Seed Oil: Probably fine In 1 product; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Salvia Hispanica Seed Oil: Probably fine In 10 products; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Salvia Officinalis (Sage) Leaf Extract: Probably fine In 2 products; Herb-garden skincare. Smells great, works decently, and occasionally gets a bit spicy with sensitive faces.; Also listed as: Salvia Officinalis (Sage) Leaf Extract*
Salvia Officinalis (Sage) Oil: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Salvia Sclarea (Clary) Extract: Probably fine In 1 product; A mystery plant extract. Likely harmless, possibly soothing, definitely makes the label look like a botany exam.
Salvia Sclarea (Clary) Oil: Probably fine In 11 products; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Sambucus Nigra (Elder Flower) Extract: Extremely safe In 1 product; Floral water-colour energy. Soft soothing, softer marketing.
Sambucus Nigra Flower Extract: Extremely safe In 2 products; Floral water-colour energy. Soft soothing, softer marketing.
Sambucus Nigra Flower ExtractAscorbyl Palmitate: Probably fine In 1 product; Vitamin C in a disguise that keeps it stable. Slower glow-up, much less sting.
Sambucus Nigra Flower Water: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Sambucus Nigra Oil: Extremely safe In 2 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Santalol: Probably fine In 1 product; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Santalum Album (Sandalwood) Oil: Probably fine In 9 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
SAPINDUS MUKOROSSI FRUIT EXTRACT: Extremely safe In 1 product; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Sapindus Trifoliatus Fruit Extract: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Saponaria Officinalis Leaf Extract: Extremely safe In 3 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Saponins: Extremely safe In 4 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Sargassum Muticum (Japanese Wireweed) Extract: Extremely safe In 1 product; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Sclareolide: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
SCLEROCARYA BIRREA SEED OIL: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Sclerotium Gum: Extremely safe In 12 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
SCUTELLARIA BAICALENSIS ROOT EXTRACT: Extremely safe In 7 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Sea Salt: Extremely safe In 2 products; A mineral salt playing supporting cast. Balances the formula and occasionally soothes, the way a good bassist holds the band together.
Sea Salt (Maris Sal): Extremely safe In 2 products; A mineral salt playing supporting cast. Balances the formula and occasionally soothes, the way a good bassist holds the band together.
Sea Water: Extremely safe In 2 products; Water, with a passport. Some fancy water still counts as water.
Sea Water (Maris Aqua): Extremely safe In 1 product; Water, with a passport. Some fancy water still counts as water.
Sebacic Acid: Extremely safe In 1 product; One of the fats your skin already makes. Showing up here feels like a family reunion.
Secale Cereale (Rye) Seed Extract: Extremely safe In 1 product; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
Serenoa Serrulata Fruit Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Serine: Extremely safe In 14 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Sesamum Indicum (Sesame) Oil Unsaponifiables: Extremely safe In 1 product; A nourishing plant oil — the farm-to-face option. Glowy, cushiony, a little bit crunchy-granola.
Sesamum Indicum (Sesame) Seed Oil: Extremely safe In 4 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
sh Polypeptide-121: Extremely safe In 2 products; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.; Also listed as: sh-Polypeptide-121
Shea Butter: Extremely safe In 1 product; The rich auntie of moisturizers. Thick, buttery, from a nut tree in West Africa, and absolutely will not let you leave dry.
Shea Butter Ethyl Esters: Extremely safe In 2 products; The rich auntie of moisturizers. Thick, buttery, from a nut tree in West Africa, and absolutely will not let you leave dry.
Shorea Robusta Resin: Probably fine In 2 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Silanediol Salicylate: Probably fine In 1 product; Salicylic acid's polite younger relative. Unclogs a bit, calms a bit, and texts before coming over.
Silanetriol: Extremely safe In 3 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Silica: Extremely safe In 53 products; Microscopic sand that soaks up oil. Your 'blurring' primer's whole magic trick is basically a tiny beach.
Silica Cetyl Silylate: Extremely safe In 2 products; Mattifying dust. Swallows shine so you can survive a summer group photo.
Silica Dimethyl Silylate: Extremely safe In 8 products; Mattifying dust. Swallows shine so you can survive a summer group photo.
Silica Silylate: Extremely safe In 7 products; The blurring powder. Soft-focus filter in physical form — absorbs shine and pretends your pores are an urban legend.
Silicone Platinum Catalyst: Extremely safe In 1 product; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
Silybum Marianum (Milk Thistle) Seed Oil: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Simmondsia Chinensis (Jojoba) Seed Oil: Extremely safe In 44 products; Technically a wax, not an oil, which is why it's so eerily similar to your skin's own sebum. The friend who blends in at every party.
Simmondsia Chinensis (Jojoba) Seed Oil，Caprylic/Capric Triglyceride: Extremely safe In 1 product; Technically a wax, not an oil, which is why it's so eerily similar to your skin's own sebum. The friend who blends in at every party.
Simmondsia Chinensis (Jojoba) Seed Oil. [+/- Iron Oxides (CI 77491, CI 77492, CI 77499),Titanium Dioxide (CI 77891).: Extremely safe In 1 product; Technically a wax, not an oil, which is why it's so eerily similar to your skin's own sebum. The friend who blends in at every party.
Smilax Aristolochiifolia Root Extract: Extremely safe In 1 product; Ancient herbal-medicine energy. The kind of root or bark your skincare aunt swears by and, irritatingly, she's usually right.
Snail Secretion Filtrate: Extremely safe In 7 products; Yes, it is exactly what it sounds like. Snail trail on your face. It feels strange, looks weird, and will give you the glass skin of a goddess. Don’t think about it, just pat it in.
So- dium Polyacrylate: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Sodium Acetylated Hyaluronate: Extremely safe In 31 products; A thirsty sponge that drinks 1,000x its weight in water. Fantastic for plumping your face, assuming you don't live in a literal desert where it will just pull the water out of your soul instead.
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer: Extremely safe In 6 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Sodium Acrylates Copolymer: Extremely safe In 10 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Sodium Acrylates Crosspolymer-2: Extremely safe In 4 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Sodium Acryloyldimethyltaurate/Vp Crosspolymer: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Sodium Ascorbate: Probably fine In 1 product; A vitamin C derivative — the celebrity's stunt double. Does most of the brightening, way fewer tantrums.
Sodium Ascorbyl Phosphate: Probably fine In 8 products; A vitamin C derivative — the celebrity's stunt double. Does most of the brightening, way fewer tantrums.
Sodium Astrocaryum Murumuruate: Extremely safe In 2 products; A mineral helper. Not the lead singer — more like the sound engineer making sure everything works.
Sodium Benzoate: Extremely safe In 82 products; Same preservative that keeps soda fresh. Your toner is basically a well-behaved Diet Coke (minus the bubbles).
SODIUM BENZOATE. WARNING: For external use only. Avoid contact with eyes. Keep out of reach of children. Discontinue use if signs of irritation and/or rash appear. If pregnant or nursing: Extremely safe In 1 product; Same preservative that keeps soda fresh. Your toner is basically a well-behaved Diet Coke (minus the bubbles).
Sodium Bicarbonate: Extremely safe In 3 products; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Sodium C14-16 Olefin Sulfonate: Probably fine In 3 products; The squeaky-clean detergent. Gets everything off — including some stuff you wanted to keep, like your moisture barrier.
Sodium Carbonate: Extremely safe In 1 product; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Sodium Carboxymethyl Beta-Glucan: Extremely safe In 1 product; The oat-and-mushroom hydrator that's basically hyaluronic acid with a better bedside manner.
Sodium Carrageenan: Extremely safe In 1 product; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Sodium Cetearyl Sulfate: Probably fine In 1 product; The squeaky-clean detergent. Gets everything off — including some stuff you wanted to keep, like your moisture barrier.
Sodium Chloride: Extremely safe In 63 products; Table salt. Mostly here to thicken cleansers. Your face wash is, in a small way, seasoned.
Sodium Citrate: Extremely safe In 34 products; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Sodium Cocoamphoacetate: Extremely safe In 2 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
SODIUM COCOYL ALANINATE: Extremely safe In 1 product; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Sodium Cocoyl Apple Amino Acids: Extremely safe In 1 product; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Sodium Cocoyl Glutamate: Extremely safe In 4 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
SODIUM COCOYL GLYCINATE: Extremely safe In 2 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Sodium Cocoyl Isethionate: Extremely safe In 7 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Sodium Cocoyl Threoninate: Extremely safe In 1 product; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Sodium Dehydroacetate: Extremely safe In 29 products; Microbe security detail. You'll never thank it, but you'd definitely notice if it quit.
Sodium DNA: Extremely safe In 6 products; An antioxidant multivitamin. Not flashy, never trending, quietly cleaning up pollution damage like a city sanitation worker.
Sodium Formate: Extremely safe In 1 product; A preservative: the formula's immune system. Without it, your cream would grow a beard within weeks.
Sodium Gluconate: Extremely safe In 9 products; A metal-grabber that keeps the formula stable and fresh. The formula's water softener.
Sodium Glucuronate: Extremely safe In 4 products; A natural moisturizing factor — basically your skin's built-in water bottle, refilled from outside.
SODIUM GLYCEROPHOSPHATE: Extremely safe In 1 product; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Sodium Glycolate: Probably fine In 1 product; A fruit-acid sidekick. Usually here in small amounts to brighten or balance — rarely the star, occasionally a tiny bit spicy.
Sodium Hyaluronate: Extremely safe In 133 products; A thirsty sponge that drinks 1,000x its weight in water. Fantastic for plumping your face, assuming you don't live in a literal desert where it will just pull the water out of your soul instead.
Sodium Hyaluronate [+\- May Contain / Peut Contenir: Red 7 Lake (CI 15850), Yellow 5 Lake (CI 19140), Blue 1 Lake (CI 42090), Titanium Dioxide (CI 77891)]: Extremely safe In 1 product; A thirsty sponge that drinks 1,000x its weight in water. Fantastic for plumping your face, assuming you don't live in a literal desert where it will just pull the water out of your soul instead.
Sodium Hyaluronate Crosspolymer: Extremely safe In 35 products; Hyaluronic acid that's been chain-linked into a slow-release net — the thirsty sponge, now with a time-release subscription.
SODIUM HYALURONATE CROSSPOLYMER-6: Extremely safe In 1 product; Hyaluronic acid that's been chain-linked into a slow-release net — the thirsty sponge, now with a time-release subscription.
Sodium Hydroxide: Extremely safe In 111 products; Yes, technically lye. No, it won't melt your face — it's used in dashes to balance pH and gets neutralized in the process.
Sodium Hydroxypropylsulfonate Laurylglucoside Crosspolymer: Extremely safe In 1 product; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Sodium Isethionate: Extremely safe In 2 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Sodium Lactate: Extremely safe In 28 products; A natural moisturizing factor — basically your skin's built-in water bottle, refilled from outside.
Sodium Laureth Sulfate: Probably fine In 2 products; The squeaky-clean detergent. Gets everything off — including some stuff you wanted to keep, like your moisture barrier.
Sodium Lauroamphoacetate: Extremely safe In 2 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
SODIUM LAUROYL ASPARTATE: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
SODIUM LAUROYL GLUTAMATE: Extremely safe In 3 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Sodium Lauroyl Lactylate: Extremely safe In 3 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Sodium Lauroyl Methyl Isethionate: Extremely safe In 2 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Sodium Lauroyl Oat Amino Acids: Extremely safe In 2 products; Breakfast for your face. The same oats your grandmother put in an itchy-kid bath, now in a fancy bottle.
Sodium Lauroyl Sarcosinate: Extremely safe In 11 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Sodium Lauryl Glucose Carboxylate: Extremely safe In 1 product; Sugar for your face, the zero-calorie kind. Pulls in moisture and makes everything feel a little sweeter.
Sodium Lauryl Sulfoacetate: Probably fine In 4 products; The squeaky-clean detergent. Gets everything off — including some stuff you wanted to keep, like your moisture barrier.
Sodium Laurylglucosides Hydroxypropylsulfonate: Extremely safe In 1 product; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Sodium Levulinate: Extremely safe In 2 products; Microbe security detail. You'll never thank it, but you'd definitely notice if it quit.
Sodium Magnesium Silicate: Extremely safe In 2 products; The blurring powder. Soft-focus filter in physical form — absorbs shine and pretends your pores are an urban legend.
Sodium Mangoamphoacetate: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Sodium Mannose Phosphate: Extremely safe In 3 products; A humectant that grabs water from the air and parks it in your skin. Like a dehumidifier, but in reverse and flattering.
Sodium Metabisulfite: Probably fine In 12 products; An antiseptic-strength preservative. Excellent at killing germs; occasionally a bit too enthusiastic with your skin, too.
SODIUM METAPHOSPHATE: Extremely safe In 23 products; The chelator: a chemical bouncer that handcuffs stray minerals from tap water so they can't mess up the formula.
Sodium Methyl Cocoyl Taurate: Extremely safe In 7 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Sodium Methyl Oleoyl Taurate: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Sodium Methyl Stearoyl Taurate: Extremely safe In 5 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Sodium Myristoyl Glutamate: Extremely safe In 1 product; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Sodium Oleate: Extremely safe In 1 product; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Sodium Olivate: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Sodium PCA: Extremely safe In 22 products; One of your skin's own built-in moisturizers, bottled. Like refilling your face's water tank from the inside.
Sodium Phosphate: Extremely safe In 4 products; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Sodium Phytate: Extremely safe In 30 products; A metal-grabber that keeps the formula stable and fresh. The formula's water softener.
Sodium Polyacrylate: Extremely safe In 23 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Sodium Polyacrylate Starch: Extremely safe In 3 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Sodium Polyacryloyldimethyl Taurate: Extremely safe In 12 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
SODIUM POLYASPARTATE: Extremely safe In 1 product; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Sodium Polystyrene Sulfonate: Extremely safe In 1 product; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Sodium Starch Octenylsuccinate: Extremely safe In 4 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Sodium Stearoyl Gluta- mate: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Sodium Stearoyl Glutamate: Extremely safe In 14 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Sodium Stearoyl Lactylate: Extremely safe In 3 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
Sodium Sulfate: Extremely safe In 5 products; A mineral helper. Not the lead singer — more like the sound engineer making sure everything works.
Sodium Sulfite: Probably fine In 3 products; An antiseptic-strength preservative. Excellent at killing germs; occasionally a bit too enthusiastic with your skin, too.
Sodium Surfactin: Extremely safe In 2 products; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.
SODIUM SWEETALMONDAMPHOACETATE: Extremely safe In 1 product; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Sodium Tocopheryl Phosphate: Extremely safe In 1 product; An antioxidant preservative. Keeps the oils fresh so your cream doesn't smell like old crayons.
Sodium Trideceth Sulfate: Probably fine In 1 product; The squeaky-clean detergent. Gets everything off — including some stuff you wanted to keep, like your moisture barrier.
Sodium Trimetaphosphate: Extremely safe In 1 product; A metal-grabber that keeps the formula stable and fresh. The formula's water softener.
Solanum Melongena (Eggplant) Fruit Extract: Extremely safe In 2 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
SOLUBLE COLLAGEN: Extremely safe In 4 products; Collagen on top of your skin can't fix collagen inside it — it just sits there being an excellent moisturizer with great PR.
Sophora Japonica Flower Extract: Extremely safe In 1 product; Floral water-colour energy. Soft soothing, softer marketing.
Sorbeth-30 Tetraoleate: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Sorbic Acid: Extremely safe In 10 products; Microbe security detail. You'll never thank it, but you'd definitely notice if it quit.
Sorbitan Isostearate: Extremely safe In 56 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Sorbitan Laurate: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Sorbitan Oleate: Extremely safe In 12 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Sorbitan Olivate: Extremely safe In 25 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Sorbitan Palmitate: Extremely safe In 2 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Sorbitan Sesquicaprylate: Extremely safe In 2 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Sorbitan Sesquiisostearate: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Sorbitan Sesquioleate: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Sorbitan Sesquioleate，Dimethicone/Vinyl Dimethocone Crosspolymer: Extremely safe In 1 product; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Sorbitan Stearate: Extremely safe In 5 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Sorbitan Trioleate: Extremely safe In 1 product; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Sorbitol: Extremely safe In 9 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Sorbityl Laurate: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Spermidine: Extremely safe In 2 products; Cellular energy-drink energy. Promises your tired skin a second wind, minus the jitters.
Sphingolipids: Extremely safe In 1 product; Barrier mortar. Literally the same stuff your skin uses to hold itself together — think spackle, but flattering.
Sphingomonas Ferment Extract: Extremely safe In 4 products; The bricklayer of your skin barrier. Shows up, fills the cracks, goes home. No hype, just walls.
Spilanthes Acmella Flower Extract: Probably fine In 1 product; Kitchen-spice-rack energy. Antioxidants with a side of 'hm, is this tingling?'
Spilanthes Acmella Flower/Leaf/Stem Extract: Probably fine In 3 products; Kitchen-spice-rack energy. Antioxidants with a side of 'hm, is this tingling?'
Spiraea Ulmaria Extract: Extremely safe In 2 products; Floral water-colour energy. Soft soothing, softer marketing.
SPIRODELA POLYRHIZA EXTRACT: Extremely safe In 3 products; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Spirulina Platensis (Algae) Extract: Extremely safe In 2 products; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Spirulina Platensis Extract: Extremely safe In 2 products; Seaweed salad, but make it skincare. Ocean-grown hydration with a faint whiff of 'I just got back from the beach.'
Squalane: Extremely safe In 76 products; Shark-liver oil's ethical, plant-based reboot. Weightless, nearly identical to your skin's own oil, and annoyingly hard to dislike.
Squalene: Extremely safe In 8 products; Squalene's cousin in the 'mimics your own skin oil' family. Weightless and quietly excellent.; Also listed as: Squalene.
Stearalkonium Hectorite: Extremely safe In 5 products; The formula's personal trainer: firms up the texture so it doesn't come out runny.
Steareth-2: Extremely safe In 2 products; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Steareth-20: Extremely safe In 7 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Steareth-21: Extremely safe In 2 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
Stearic Acid: Extremely safe In 60 products; The fatty acid that gives creams their body and soap its bar. The structural engineer of the moisturizer world.
STEARIC ACIDPEG-32: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Stearoxymethicone/Dimethicone Copolymer: Extremely safe In 1 product; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
Stearoyl Glutamic Acid May Contain: Mica CI 77019: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Steartrimonium Methosulfate: Extremely safe In 1 product; A conditioning agent — basically fabric softener, but for skin and hair. Makes everything feel smooth and static-free.
Stearyl Alcohol: Extremely safe In 12 products; A fatty alcohol. Makes creams thick and cushiony — the misunderstood sibling of drying alcohol.
Stearyl Behenate: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Stearyl Caprylate: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Stearyl Dimethicone: Extremely safe In 1 product; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Stearyl Glycyrrhetinate: Extremely safe In 4 products; Licorice root, minus the candy aisle. Calms redness and fades spots like a grandma with a secret brightening hobby.
Stearyl Heptanoate: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Stevia Rebaudiana Leaf/Stem Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Styrax Benzoin Resin Extract: Probably fine In 1 product; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Styrax Japonicus Branch/Fruit/Leaf Extract: Probably fine In 1 product; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Styrene Isoprene Styrene Block Copolymer: Extremely safe In 2 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Styrene/Acrylates Copolymer: Extremely safe In 5 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Styrene/Isoprene Copolymer: Extremely safe In 3 products; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
Subtilisin: Probably fine In 4 products; An enzyme exfoliant — basically a tiny Pac-Man that eats dead skin. Effective, but it doesn't always check whether the skin is dead first.
Succinic Acid: Probably fine In 3 products; A mild acid with exfoliating ambitions. Gentle at low doses; stacked with other acids, it can tip into tingly territory.
Succinoglycan: Extremely safe In 3 products; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Sucrose: Extremely safe In 14 products; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.
SUCROSE COCOATE: Extremely safe In 3 products; Soap's polite descendant. Cleans thoroughly, leaves your face on speaking terms with you afterward.
Sucrose Distearate: Extremely safe In 2 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Sucrose Laurate: Extremely safe In 2 products; Emulsion glue. Holds the oily bits and watery bits together so you don't have to shake your moisturizer.
Sucrose Palmitate: Extremely safe In 3 products; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Sucrose Stearate: Extremely safe In 6 products; An emulsifier: the matchmaker that convinces oil and water to share an apartment.
SUCROSE TETRASTEARATE TRIACETATE: Extremely safe In 1 product; The reason your lotion is creamy instead of a separated salad dressing. Peacekeeper of the jar.
Sy- ringa Vulgaris (Lilac) Leaf Cell Culture Extract: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Symphytum Officinale Root Extract: Extremely safe In 2 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Synthetic Beeswax: Extremely safe In 6 products; A wax: the structural backbone of lip balms and balms. Holds its shape so your stick doesn't melt in your pocket.
Synthetic Fluorphlogopite: Extremely safe In 17 products; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Synthetic Sapphire: Probably fine In 1 product; A physical exfoliant. The tiny loofah army; use gently or it turns into a tiny sandblaster.
Synthetic Wax: Extremely safe In 6 products; A wax: the structural backbone of lip balms and balms. Holds its shape so your stick doesn't melt in your pocket.

T

T-Butyl Alcohol: Proceed with caution In 6 products; The quick-dry party guest. Makes products feel light and fresh, then leaves with your skin's moisture in its pocket.
Tagetes Minuta Flower Oil: Probably fine In 2 products; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
TALC: Extremely safe In 4 products; The silky powder that makes everything feel like baby skin. Controversial on the news, very smooth on your face.
Tamarindus Indica (Tamarind) Extract: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Tamarindus Indica Seed Gum: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Tamarindus Indica Seed Polysaccharide: Extremely safe In 1 product; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Tanacetum Annuum (Blue Tansy) Flower Oil: Probably fine In 3 products; An essential oil or scent molecule: smells like a luxury spa, acts like a very small houseguest who might be lovely or might bite. Usually lovely.
Tanacetum Annuum Flower Oil: Probably fine In 1 product; Aromatherapy in your moisturizer. Your nose will be thrilled; your skin will probably be fine, unless it's the dramatic type.
Tapioca Starch: Extremely safe In 3 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.
Tasmannia Lanceolata Leaf Extract: Probably fine In 3 products; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Taurate Copolymer: Extremely safe In 1 product; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.
TAURINE: Extremely safe In 3 products; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
TBHQ: Extremely safe In 1 product; The bodyguard for the oils in the bottle. Takes oxidation bullets so the good stuff doesn't go rancid.
TBHQ. (+/-): Titanium Dioxide (CI 77891): Extremely safe In 2 products; The bodyguard for the oils in the bottle. Takes oxidation bullets so the good stuff doesn't go rancid.
Tephrosia Purpurea Seed Extract: Extremely safe In 2 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Teprenone: Extremely safe In 2 products; A longevity-lab ingredient. Sounds like it belongs in a biohacker podcast, behaves like a gentle pep talk.
Terminalia Arjuna Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Terminalia Ferdinandiana (Kakadu Plum) Fruit Extract: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Terminalia Ferdinandiana Fruit Extract: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Terpineol: Proceed with caution In 6 products; A scent molecule that's legally required to be called out on EU labels for a reason. Smells pretty; picks fights with sensitive skin.
TERPINOLENE: Proceed with caution In 1 product; One of the 'smells nice, may bite' crowd. A fragrance molecule on the official allergen watch list — lovely in a candle, dicey on a sensitive face.
Tetra-n-Propyl Silicate: Extremely safe In 1 product; A powder that makes formulas feel velvety. The 'real-life Instagram filter' you can touch.
Tetrabutyltitanate: Extremely safe In 1 product; A mineral salt playing supporting cast. Balances the formula and occasionally soothes, the way a good bassist holds the band together.
Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate: Extremely safe In 2 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Tetrahex yldecyl Ascorbate: Probably fine In 1 product; A vitamin C derivative — the celebrity's stunt double. Does most of the brightening, way fewer tantrums.
Tetrahexyldecyl Ascorbate: Extremely safe In 20 products; The luxury-sedan vitamin C. Oil-soluble, ultra-stable, no sting. Gets you there slower but in heated seats.
Tetrahydroxypropyl Ethylenediamine: Extremely safe In 5 products; The chelator: a chemical bouncer that handcuffs stray minerals from tap water so they can't mess up the formula.
Tetrakis Methane: Extremely safe In 1 product; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Tetrakismethane: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Tetramethyl Acetyloctahydronaphthalenes: Probably fine In 1 product; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Tetrapeptide-1: Extremely safe In 2 products; A peptide: the anti-aging middle manager. Sends memos to your collagen factory and hopes someone's paying attention.
Tetrasodium EDTA: Extremely safe In 3 products; The chelator: a chemical bouncer that handcuffs stray minerals from tap water so they can't mess up the formula.
Tetrasodium Glutamate Diacetate: Extremely safe In 46 products; The chelator: a chemical bouncer that handcuffs stray minerals from tap water so they can't mess up the formula.
THEOBROMA: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
THEOBROMA CACAO (COCOA) EXTRACT: Extremely safe In 19 products; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Theobroma Cacao (Cocoa) Seed Butter: Probably fine In 11 products; Rich, buttery, and a known pore-clogger for some. Dreamy for dry skin, a potential breakout invitation for oily skin.
Theobroma Cacao (Cocoa) Seed Extract: Extremely safe In 2 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Theobroma Grandiflorum Seed Butter: Extremely safe In 1 product; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
Thioctic Acid: Extremely safe In 5 products; A longevity-lab ingredient. Sounds like it belongs in a biohacker podcast, behaves like a gentle pep talk.
Threonine: Extremely safe In 8 products; An amino acid — a Lego brick your skin uses to build its own moisture factor.
Thymol: Proceed with caution In 4 products; The tingle-is-working myth in a bottle. That icy-hot zing is your skin saying 'ouch' in a refreshing accent.
THYMOL TRIMETHOXYCINNAMATE: Probably fine In 2 products; A UV-absorbing sunscreen filter. Your face's personal solar panel, with a mild habit of stinging when it slides into your eyes.
Thymus Serpyllum Extract: Probably fine In 1 product; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Thymus Vulgaris (Thyme) Flower/Leaf Extract: Probably fine In 3 products; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Thymus Vulgaris (Thyme) Flower/Leaf Oil: Proceed with caution In 2 products; Spicy-fresh and proud of it. Wakes your face up the way a cold shower wakes up your soul — loudly.
Thymus Vulgaris (Thyme) Oil: Proceed with caution In 1 product; Spicy-fresh and proud of it. Wakes your face up the way a cold shower wakes up your soul — loudly.
Tin Oxide: Extremely safe In 14 products; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Tin Oxide. [+/-] Iron Oxides (CI 77491): Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Tin Oxide. [± Titanium Dioxide (CI 77891), Iron Oxides (CI 77491, CI 77492, CI 77499), Red 28 Lake (CI 45410), Yellow 5 Lake (CI 19140), Red 6 Lake (CI 15850), Red 7 Lake (CI 15850), Blue 1 Lake (CI 42090)].: Extremely safe In 1 product; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Titanium Dioxide: Extremely safe In 10 products; The white pigment that also blocks UV. Either your makeup's brightener or your sunscreen's shield — sometimes both, like a mild-mannered superhero.
Titanium Dioxide (C: Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Titanium Dioxide (CI 77891): Extremely safe In 41 products; The white pigment that also blocks UV. Either your makeup's brightener or your sunscreen's shield — sometimes both, like a mild-mannered superhero.; Also listed as: Titanium Dioxide CI 77891; TITANIUM DIOXIDE(CI 77891)
Titanium Dioxide 1.75%: Extremely safe In 1 product; Mineral sunscreen: a tiny reflective umbrella for your face. Blocks the sun, occasionally makes you look like a Victorian ghost.
Titanium Dioxide 5%: Extremely safe In 1 product; Mineral sunscreen: a tiny reflective umbrella for your face. Blocks the sun, occasionally makes you look like a Victorian ghost.
Titanium Dioxide 9.3% w/wInactive Ingredients: Mica: Extremely safe In 1 product; Mineral sunscreen: a tiny reflective umbrella for your face. Blocks the sun, occasionally makes you look like a Victorian ghost.
Titanium Dioxide 17%.: Extremely safe In 1 product; Mineral sunscreen: a tiny reflective umbrella for your face. Blocks the sun, occasionally makes you look like a Victorian ghost.
Titanium Dioxide，(+-CI 77492, CI 77491, CI 77499, Iron Oxide Brown): Extremely safe In 1 product; The white pigment that also blocks UV. Either your makeup's brightener or your sunscreen's shield — sometimes both, like a mild-mannered superhero.
Tocopherol: Extremely safe In 218 products; Vitamin E: the bodyguard who takes oxidation bullets for the rest of the formula. Slightly greasy, extremely loyal.
Tocopherol +/- : CI 77891 (Titanium Dioxide): Extremely safe In 1 product; Vitamin E: the bodyguard who takes oxidation bullets for the rest of the formula. Slightly greasy, extremely loyal.
Tocopherol May Contain: Iron Oxides (CI 77489, CI 77491, CI 77492, CI 77499): Extremely safe In 1 product; Vitamin E: the bodyguard who takes oxidation bullets for the rest of the formula. Slightly greasy, extremely loyal.
TOCOPHEROL ROSMARINUS OFFICINALIS (ROSEMARY) LEAF EXTRACT: Extremely safe In 1 product; The bodyguard for the oils in the bottle. Takes oxidation bullets so the good stuff doesn't go rancid.
Tocopherol. [+/– Titanium Dioxide (CI 77891), Iron Oxides (CI 77491, CI 77492, CI 77499)].: Extremely safe In 1 product; Vitamin E: the bodyguard who takes oxidation bullets for the rest of the formula. Slightly greasy, extremely loyal.
TOCOPHEROL. MAY CONTAIN / PEUT CONTENIR (+/-): IRON OXIDES (CI 77491, CI 77492, CI 77499).: Extremely safe In 1 product; Vitamin E: the bodyguard who takes oxidation bullets for the rest of the formula. Slightly greasy, extremely loyal.
Tocophery Acetate: Extremely safe In 1 product; Vitamin E in a protective trench coat. More stable on the shelf, converts to the real thing once it's on your skin.
Tocopheryl Acetate: Extremely safe In 60 products; Vitamin E in a protective trench coat. More stable on the shelf, converts to the real thing once it's on your skin.
TOCOPHERYL LINOLEATE: Extremely safe In 1 product; An antioxidant preservative. Keeps the oils fresh so your cream doesn't smell like old crayons.
Tocotrienols: Extremely safe In 8 products; An antioxidant preservative. Keeps the oils fresh so your cream doesn't smell like old crayons.
Tranexamic Acid: Extremely safe In 4 products; A dark-spot bouncer. Stands at the door and tells melanin it's not on the list tonight.
Trehalose: Extremely safe In 16 products; The sugar that lets desert plants survive drying out. Tells your skin: 'You'll make it, champ.'
tremella fuciformis (mushroom) extract: Extremely safe In 1 product; Fungi with a glow-up. Hydrating, soothing, and the reason your serum shelf is starting to look like a forest floor.
Tremella Fuciformis Polysaccharide: Extremely safe In 1 product; A thickener that gives your serum its satisfying slip. All engineering, no feelings.
Tremella Fuciformis Sporocarp Extract: Extremely safe In 4 products; Fungi with a glow-up. Hydrating, soothing, and the reason your serum shelf is starting to look like a forest floor.
Triacetin: Extremely safe In 1 product; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Tribehenin: Extremely safe In 9 products; A lightweight emollient. The difference between 'rich moisturizer' and 'I just rubbed butter on my face.'
Tribehenin Boron Nitride: Extremely safe In 1 product; The blurring powder. Soft-focus filter in physical form — absorbs shine and pretends your pores are an urban legend.
Triceteareth-4 Phosphate: Extremely safe In 2 products; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Tridecane: Extremely safe In 4 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Trideceth-6 Phosphate: Extremely safe In 7 products; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Trideceth-9: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
Trideceth-12: Extremely safe In 1 product; The relationship counselor that makes oil and water stop fighting. Mediates the emulsion, takes no sides, gets no thanks.
tridecyl trimellitate: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Triethanolamine: Extremely safe In 2 products; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Triethox ycaprylylsilane: Extremely safe In 1 product; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
Triethoxycaprylylsilane: Extremely safe In 27 products; The primer of the ingredient world. Silky, smoothing, slightly controversial online, mostly just a very good-natured slip-n-slide.
Triethyl Citrate: Extremely safe In 15 products; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Triethylhexanoin: Extremely safe In 7 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Trifolium Pratense (Clover) Flower Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Trifolium Repens Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Triheptanoin: Extremely safe In 4 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Trihydroxystearin: Extremely safe In 5 products; Lab-made smoothness. Gives products that dry-touch, expensive-feeling finish.
Triisostearyl Citrate: Extremely safe In 2 products; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Trimethylolpropane Tricaprylate/Tricaprate: Extremely safe In 2 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Trimethylsiloxyphenyl Dimethicone: Extremely safe In 1 product; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
Trimethylsiloxysilicate: Extremely safe In 12 products; Mattifying dust. Swallows shine so you can survive a summer group photo.
Triolein: Extremely safe In 7 products; The silky emollient. Makes the cream glide on like it's been to finishing school, then disappears without a greasy trace.
Tripleurospermum Maritimum (Sea Mayweed) Extract: Probably fine In 1 product; The daisy-family soother. Calms most people down instantly — unless you're one of the few who sneeze at ragweed, in which case it's a frenemy.
Tripropylene Glycol: Probably fine In 1 product; A classic humectant with a reputation. Hydrates nicely, but a small fan club of sensitive skin types swear it makes them itchy.
Tris(Tetramethylhydroxypiperidinol) Citrate: Extremely safe In 1 product; The bodyguard for the oils in the bottle. Takes oxidation bullets so the good stuff doesn't go rancid.
Trisiloxane: Extremely safe In 1 product; A silicone: the velvet rope of skincare. Gives everything that luxe glide and locks moisture under a breathable film.
Trisodium EDTA: Extremely safe In 2 products; A metal-grabber that keeps the formula stable and fresh. The formula's water softener.
Trisodium Ethylenediamine: Extremely safe In 1 product; A metal-grabber that keeps the formula stable and fresh. The formula's water softener.
Trisodium Ethylenediamine Disuccinate: Extremely safe In 6 products; The chelator: a chemical bouncer that handcuffs stray minerals from tap water so they can't mess up the formula.
Triticum Aestivum (Wheat) Leaf Extract: Extremely safe In 1 product; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Triticum Vulgare (Wheat) Germ Oil: Probably fine In 11 products; Rich, buttery, and a known pore-clogger for some. Dreamy for dry skin, a potential breakout invitation for oily skin.
Triticum Vulgare (Wheat) Germ Oil Unsaponifiables: Probably fine In 1 product; Rich, buttery, and a known pore-clogger for some. Dreamy for dry skin, a potential breakout invitation for oily skin.
Tromethamine: Extremely safe In 34 products; A pH adjuster. Like seasoning: a pinch is all it takes, and nobody orders it for its own sake.
Tropaeolum Majus Flower/Leaf/Stem Extract: Extremely safe In 1 product; Floral water-colour energy. Soft soothing, softer marketing.
Tropolone: Extremely safe In 1 product; The bouncer that keeps bacteria and mold out of the club. Unglamorous, essential, and the reason your moisturizer isn't fuzzy.
TRYPTOPHAN: Extremely safe In 3 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
TUBER MELANOSPORUM EXTRACT: Extremely safe In 1 product; Fungi with a glow-up. Hydrating, soothing, and the reason your serum shelf is starting to look like a forest floor.
Turpentine: Proceed with caution In 1 product; The menthol-mint-spice squad. Feels invigorating for 10 seconds, then sensitive skin starts writing a complaint letter.
Tyrosine: Extremely safe In 4 products; An amino acid — a Lego brick your skin uses to build its own moisture factor.

U

Ubiquinone: Extremely safe In 10 products; A longevity-lab ingredient. Sounds like it belongs in a biohacker podcast, behaves like a gentle pep talk.
Ubiquinone (Coenzyme Q10): Extremely safe In 2 products; A longevity-lab ingredient. Sounds like it belongs in a biohacker podcast, behaves like a gentle pep talk.
ulmus davidiana root extract: Extremely safe In 4 products; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Ultramarines (CI 77007): Extremely safe In 6 products; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Ultramarines (CI77007): Extremely safe In 1 product; Crayons for grown-ups. Here for color and shimmer only — it doesn't do anything to your skin except make it look like a highlighter ad.
Undaria Pinnatifida Extract: Extremely safe In 7 products; Algae: pond scum that went to finishing school. Surprisingly hydrating and antioxidant-rich.
Undecane: Extremely safe In 4 products; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Undecylenate: Extremely safe In 1 product; An emollient ester: slip and softness without the oil-slick. The skincare equivalent of a good conditioner.
Undecylenoyl Glycine: Extremely safe In 1 product; Protein shake for your skin. Builds a little cushion of moisture and makes everything feel smoother. Skip leg day, not this.
Urea: Extremely safe In 13 products; Yes, it's in pee — no, it isn't made from pee. Lab-made moisture-holder that softens rough elbows and heels like a pro.
URIC ACID: Extremely safe In 1 product; The pH referee. Here in tiny amounts to keep the formula balanced — not the scary chemistry you're picturing.
Urtica Dioica (Nettle) Extract: Extremely safe In 2 products; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.
Usnea Barbata (Lichen) Extract: Extremely safe In 1 product; A traditional medicinal plant. Sounds like a potion ingredient, behaves like a calm, well-read herbalist.

V

Vaccinium Angustifolium (Blueberry) Fruit Extract: Extremely safe In 2 products; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Vaccinium Angustifolium (Blueberry) Seed Oil: Extremely safe In 1 product; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Vaccinium Macrocarpon (Cranberry) Fruit Extract: Extremely safe In 3 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Vaccinium Macrocarpon (Cranberry) Seed Oil: Extremely safe In 4 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
VACCINIUM MYRTILLUS FRUIT EXTRACT: Extremely safe In 1 product; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
VACCINIUM VITIS-IDAEA (LINGONBERRY) FRUIT EXTRACT: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Valine: Extremely safe In 3 products; Skin-food protein. Coats, cushions, and hydrates like a protein-packed smoothie for your face.
Vanilla Planifolia (Vanilla) Fruit Extract: Extremely safe In 3 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Vanilla Planifolia Fruit: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Vanilla Planifolia Fruit Extract: Extremely safe In 2 products; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Vanilla Tahitensis Fruit Extract: Extremely safe In 2 products; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Vanillin: Probably fine In 4 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Vanillin May Contain: Iron Oxides (CI 77489, CI 77491, CI 77492, CI 77499): Probably fine In 1 product; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Vegetable Oil: Extremely safe In 2 products; Cold-pressed comfort. Plant fats that make dry skin go 'ahhh.'
VEGETABLE OIL / OLUS OIL / HUILE VÉGÉTALE: Extremely safe In 2 products; Nature's moisturizer, pressed from a seed. Like a smoothie for your skin barrier.
Verbascum Thapsus Extract: Extremely safe In 3 products; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Veronica Officinalis Flower/Leaf/Stem Extract: Extremely safe In 1 product; A bouquet in a bottle. Gentle, pretty, and very good at making the ingredient list sound like a garden party.
Vetiveria Zizanoides Root Oil: Probably fine In 4 products; Fancy-candle chemistry. Here mostly for the smell, which means it's mostly there for you, not your skin.
Vinyl Dimethicone: Extremely safe In 1 product; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.
VINYL DIMETHICONE/METHICONE SILSESQUIOXANE CROSSPOLYMER: Extremely safe In 6 products; The reason your foundation glides instead of drags. Smooth operator, unfairly villainized by the internet.; Also listed as: Vinyl Dimethicone/ Methicone Silsesquioxane Crosspolymer
Viola Odorata Leaf Extract: Extremely safe In 3 products; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Viola Tricolor Extract: Extremely safe In 1 product; The flower-petal extract. Mostly here to make the label sound like a romance novel — and it does lightly soothe and hydrate.
Violet 2 (CI 60725): Extremely safe In 2 products; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
VITIS VINIFERA (GRAPE) FRUIT EXTRACT: Extremely safe In 1 product; Produce-aisle botanicals. Vitamin-rich, gentle, and very photogenic on a label.
Vitis Vinifera (Grape) Leaf Extract: Extremely safe In 2 products; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Vitis Vinifera (Grape) Seed Extract: Extremely safe In 5 products; Smoothie-bar skincare. Fruity antioxidants that sound delicious and, thankfully, are not.
Vitis Vinifera (Grape) Seed Extract Ascorbyl Palmitate: Probably fine In 1 product; Vitamin C in a disguise that keeps it stable. Slower glow-up, much less sting.
Vitis Vinifera (Grape) Seed Extract Saccharide Isomerate: Extremely safe In 1 product; A natural moisturizing factor — basically your skin's built-in water bottle, refilled from outside.
Vitis Vinifera (Grape) Seed Oil: Extremely safe In 15 products; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Voandzeia Subterranea Seed Extract: Extremely safe In 1 product; Farm-stand skincare. Wholesome, gentle, and slightly too proud of being 'plant-based.'
VP/Eicosene Copolymer: Extremely safe In 10 products; Invisible scaffolding. Holds the formula's shape so it doesn't slide off your face like soup.; Also listed as: VP/ Eicosene Copolymer
VP/VA COPOLYMER: Extremely safe In 1 product; A lab-built thickener that gives your serum its 'expensive' slip. All engineering, no feelings.

W

Waltheria Indica Leaf Extract: Extremely safe In 1 product; Apothecary-shelf botanical. Grandma's remedy, now with a barcode.
Water: Extremely safe In 40 products; Water. It's water. The most expensive tap water you'll ever buy, and the reason the bottle isn't a solid brick.
Water (Aqua): Extremely safe In 8 products; Water. It's water. The most expensive tap water you'll ever buy, and the reason the bottle isn't a solid brick.; Also listed as: Water/Aqua; WATER(AQUA)
Water/Aqua/Eau: Extremely safe In 161 products; Water. It's water. The most expensive tap water you'll ever buy, and the reason the bottle isn't a solid brick.; Also listed as: WATER / AQUA / EAU; Water (Aqua/Eau); Water/ Aqua/Eau; Water/Aqua/ Eau
Water/Eau/Aqua: Extremely safe In 17 products; Water. It's water. The most expensive tap water you'll ever buy, and the reason the bottle isn't a solid brick.

X

Xan- than Gum: Extremely safe In 1 product; Fermented-sugar thickener that also thickens salad dressing. Your serum's bouncy texture? This guy, and it's not ashamed.
XANATHAN GUM: Extremely safe In 1 product; Fermented-sugar thickener that also thickens salad dressing. Your serum's bouncy texture? This guy, and it's not ashamed.
Xanthan Gum: Extremely safe In 131 products; Fermented-sugar thickener that also thickens salad dressing. Your serum's bouncy texture? This guy, and it's not ashamed.
Xanthophyll: Extremely safe In 2 products; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Xanthophylls: Extremely safe In 2 products; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
Xylitol: Extremely safe In 16 products; Basically candy chemistry repurposed for hydration. Wonka would approve.
Xylitylglucoside: Extremely safe In 9 products; Sugar for your face, the zero-calorie kind. Pulls in moisture and makes everything feel a little sweeter.
Xylose: Extremely safe In 1 product; A sugar-based humectant. Your skin's sweet tooth, satisfied with zero cavities.

Y

Yeast Extract: Extremely safe In 2 products; The kombucha of skincare. Bacteria and yeast that ate something healthy and left behind a souvenir your skin happens to love.
YEAST EXTRACT / FAEX / EXTRAIT DE LEVURE: Extremely safe In 1 product; The kombucha of skincare. Bacteria and yeast that ate something healthy and left behind a souvenir your skin happens to love.
Yeast Ferment (Pink Yeast) Extract: Extremely safe In 1 product; A ferment: microbes did the cooking, your skin gets the leftovers. Delicious, apparently.
YELLOW 6 (CI 15985): Extremely safe In 1 product; Pure pigment. Its only job is to make the product the right shade, and it takes that job very seriously.
YELLOW 6 LAKE (CI 15985): Extremely safe In 2 products; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Yellow Iron Oxide (CI 77492): Extremely safe In 2 products; Cosmetic-grade color. If your foundation matches your face, thank this ingredient (and your lighting).
Yucca Schidigera Stem Extract: Extremely safe In 1 product; A mild surfactant. Makes the bubbles happen without starting a war with your moisture barrier.

Z

Zanthoxylum Bungeanum Fruit Extract: Probably fine In 1 product; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
ZEA MAYS (CORN) KERNEL EXTRACT: Extremely safe In 1 product; A vegetable-drawer extract. Your mom told you to eat your greens; your moisturizer took the advice literally.
Zea Mays (Corn) Oil: Extremely safe In 1 product; Salad dressing for your face. A plant oil that softens, glows, and makes you smell faintly of a health-food store.
Zea Mays (Corn) Starch: Extremely safe In 8 products; The texture architect. Turns watery stuff into gel, cream, or bouncy jelly. Contributes nothing emotionally, everything structurally.
Zinc Gluconate: Extremely safe In 15 products; A mineral helper. Not the lead singer — more like the sound engineer making sure everything works.
Zinc Glycinate: Extremely safe In 2 products; The gentle cleanser: lifts off sunscreen and grime without leaving your face feeling like a squeaky dinner plate.
Zinc Oxide: Extremely safe In 2 products; Mineral sunscreen royalty. Blocks UVA and UVB like a tiny reflective umbrella, occasionally makes you look like a Victorian ghost.
Zinc Oxide 15.6%: Extremely safe In 1 product; Mineral sunscreen royalty. Blocks UVA and UVB like a tiny reflective umbrella, occasionally makes you look like a Victorian ghost.
Zinc PCA: Extremely safe In 9 products; A natural moisturizing factor — basically your skin's built-in water bottle, refilled from outside.
Zinc Stearate: Extremely safe In 3 products; Mattifying dust. Swallows shine so you can survive a summer group photo.
Zinc Sulfate: Extremely safe In 2 products; A mineral helper. Not the lead singer — more like the sound engineer making sure everything works.
ZINGIBER OFFICINALE (GINGER) RHIZOME EXTRACT: Probably fine In 1 product; Kitchen-spice-rack energy. Antioxidants with a side of 'hm, is this tingling?'
Zingiber Officinale (Ginger) Root Extract: Probably fine In 16 products; A zesty, aromatic plant extract. Brings brightness and a little attitude — sensitive skin may feel the attitude more than the brightness.
Zingiber Officinale (Ginger) Root Oil: Proceed with caution In 7 products; The menthol-mint-spice squad. Feels invigorating for 10 seconds, then sensitive skin starts writing a complaint letter.
ZIZIPHUS JUJUBA FRUIT EXTRACT: Extremely safe In 4 products; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Zizyphus Jujuba Fruit Extract: Extremely safe In 1 product; A fruit-salad extract. Antioxidants and a tiny bit of glow — sadly, it will not count toward your five-a-day.
Zymomonas Ferment Extract: Extremely safe In 1 product; A ferment: microbes did the cooking, your skin gets the leftovers. Delicious, apparently.