SPF Scout · Ingredient
Polysilicone-31
CAS 1620834-82-3
What this ingredient generally does
This is a silicone film former that leaves a thin, even layer on the skin as the product dries. That coating helps the formula stay put where you applied it.
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.
Allure Labs Protectif Fair Tint
SPF 50+ as labeled · U.S. formulation
Allure Labs Protectif Untinted
SPF 50+ as labeled · U.S. formulation
Bull Frog SPF 50 Quik with Water Armor Tech
Labeler: Bullfrog Brands · SPF 50 as labeled · U.S. formulation
Protectif Fair Tint
Labeler: Derma Research Group · SPF 50+ as labeled · U.S. formulation
Derma Research Group Protectif Untinted
SPF 50+ as labeled · U.S. formulation
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.