Styrene/Acrylates/Ammonium Methacrylate Copolymer

Styrene/Acrylates/Ammonium Methacrylate Copolymer molecular structure
molecular structure · PubChem
AKA: Film-forming polymer, Styrene acrylate copolymer
Synthetic
Occlusive
Clean
OriginDerived from styrene, acrylic monomers, and ammonium methacrylate as chemical starting materials. Synthesized through free radical polymerization of these monomers to form a crosslinked copolymer.
Styrene/Acrylate/Ammonium Methacrylate Copolymer
Form
Liquid
State
Solid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Opacifying
Creates Protective Barrier
Adds Opacity
Creates protective layer
Creates creamy opacity
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
2
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-on1.2–38%
Rinse-off10%
0%50%100%
CIR reported use · 2018 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR