SPF Scout · Ingredient

Stearic Acid

Emulsion stabilizer (keeps oil and water mixed)Fragrance ingredient (scent)otherRefatting (CosIng functional class)Surfactant (cleanses or mixes oil and water)

CAS 57-11-4

What this ingredient generally does

Stearic Acid helps oil and water mix, keeps that blend from separating, and cleanses. It also softens skin feel and adds scent, so it keeps the product stable and smooth while contributing fragrance.

Reviewed before publication. This note describes function in a formulation, and nothing else.

Published formulations that list this ingredient

These are the formulations currently published in the SPF Scout catalog whose stored ingredient declaration includes this ingredient. It is not a list of every product on the market, and the order carries no meaning.

Checking this against your own list

You can select this ingredient in the SPF Scout app as one to flag. The app compares your selections against a product's stored declaration on your device; your list never reaches this website.

This comparison does not predict whether your skin will react.

Where this information comes from

Ingredient names, CAS numbers and recorded functions come from SPF Scout’s curated ingredient dictionary, grounded in CosIng, the European Commission’s Cosmetic Ingredient Database. Content © European Union, reused with acknowledgement.

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