Styrene/Acrylates Copolymer

Forms a light film.

What it is

A lab-made polymer built from styrene and acrylic acid or related compounds.

Forms a film and makes the product less see-through.

A short summary from the dictionary, not yet an in-depth article. About these entries

Forms a light filmOfficial EU function: Film forming

Makes the formula less see-throughOfficial EU function: Opacifying

Restricted in certain uses · Cosmetics, EU

EU cosmetics law bans only its nano form (Annex II, entry 1725).

A label gives no amounts, so none of this says a product is unsafe.