INCI · other · CIR review pending · used in 2 products
Styrene/Acrylates Copolymer
Styrene/Acrylates Copolymer is a synthetic film-forming polymer built from repeating subunits of butyl acrylate and styrene (ethenylbenzene), with CAS number 9010-92-8. It is used in cosmetic formulations primarily to create water-resistant films on the skin. According to CosIng, its official functions are film forming and opacifying.
Evidence level
moderateEWG score
—Comedogenic
—Category
other● Benefits
It enables the formulation of water-resistant sunscreen and cosmetic products by forming a durable film on the skin. It also provides an approximate 11–18% boost in SPF value per 1% concentration used in sunscreen formulas.
film-formingwater-resistancespf-boosting
● Cautions
