Ingredients

Sodium Citrate

What Sodium Citrate does in skincare, its usual role in cosmetic formulas, who may prefer it, and what to know before using it.

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Quick facts

INCI name
Sodium Citrate
CAS number
68-04-2
Origin
Synthetic
Chemical class
Organic acid salt (citrate)
What it does in a formula
buffering, chelating, pH adjusting
Why it is in the formula
Usually used in small amounts to buffer or adjust a formula?s pH and help it stay consistent.

What it is

Derived from citric acid, sodium citrate is a buffering salt that helps stabilize and maintain the desired pH level in cosmetic formulations. By resisting unwanted shifts in formula acidity over time, it supports product stability. Its presence in a product is distinct from applying raw kitchen citrus juice to the skin.

A product?s pH can affect how its ingredients work, how stable the formula is, and how it feels during use. Sodium citrate may be used with citric acid or other buffering ingredients to tune that balance. It is a supporting ingredient, and its presence does not reveal the finished product?s exact pH.

What it does

  • Helps adjust pH. It can bring a formula toward the range its maker intends.
  • Buffers the formula. Alongside an acid, it can help reduce pH swings during storage.
  • Can bind metal ions. This chelating support may help protect formula quality, depending on the recipe.

This ingredient is a supporting part of a finished formula. Its contribution can vary with product type, manufacturing, and other materials used alongside it. Ingredient lists are not concentration labels, so they cannot tell you how strong a particular effect will be.

Who it suits

Sodium citrate is not usually chosen for a direct skin benefit, and it is generally a small supporting part of the formula. People with different skin types can encounter it in cleansers, moisturizers, and other products. Compare products by their whole formula and how they feel, not by this pH adjuster alone.

The overall texture and the rest of the ingredient list matter as much as this one name. If a new product causes persistent discomfort, stop using it and ask a dermatologist for advice. Patch-testing can help you introduce unfamiliar formulas more cautiously.

What to pair it with, and what not to

There is no routine step to pair with sodium citrate. It does its work inside the formula, sometimes with citric acid or a chelator such as disodium EDTA. You do not need to layer it with an acid or try to neutralize it yourself. There is no need to build a routine around this ingredient alone. Choose compatible textures, follow product directions, and let the complete formula do its intended job.

Skin Realist check: A quiet pH adjustment is better than a formula that feels like it is trying to make a point.

Quick picks with Sodium Citrate

Picked from label facts only. We haven't tested these products.

All 34 products with Sodium Citrate

Daily Moisturizers & Water Gel Creams (6)

Daily Sunscreens & SPF Moisturizers (3)

Full-Coverage Camouflage & Liquid Foundations (3)

Gel, Foam & Cream Facial Cleansers (3)

Hydrating Toners, Essence Waters & Face Mists (3)

Eye Creams & Under-Eye Patches (2)

Targeted Vitamin C & Brightening Correctors (2)

Blush, Bronzers & Highlighters (2)

Pimple Patches & Overnight Spot Treatments (1)

Premium Overnight Recovery Packs & Sleeping Facials (1)

Mineral Pressed Powders & Skin-Nourishing Primers (1)

Sheet, Hydrogel & Clay Masks (1)

Anti-Aging & Retinoid Serums (1)

Physical & Enzyme Face Exfoliants (1)

Body Creams, Butters & Body Oils (1)

Cream & Gel Treatment Masks (1)

High-Definition Camouflage Concealers (1)

Dermatological Acne & Chemical Exfoliating Liquids (1)

Common questions

What does sodium citrate do in skincare?

It is used as a pH adjuster and buffer. It helps formulators set or maintain the acidity of a product.

Is sodium citrate the same as citric acid?

No. Sodium citrate is a salt of citric acid and has different properties in a formula. They may be used together to adjust and buffer pH.

Is sodium citrate an active ingredient?

It is usually a supporting ingredient, not an active chosen to change the look of skin. Its main role is to help the formula reach its intended pH.

Sources