SPF Scout · Ingredient

Calcium Starch Octenylsuccinate

Absorbent (takes up oil or water)Emulsion stabilizer (keeps oil and water mixed)Surfactant (cleanses or mixes oil and water)Viscosity control (thickens or thins the formula)

What this ingredient generally does

A starch-based multitasker that soaks up excess oil or moisture, helps oil and water stay mixed, and adjusts how thick the product is. It also keeps that oil-and-water blend from separating over time.

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

Published U.S. formulations that list this ingredient

These are the U.S. 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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