Sodium Methacrylate/Styrene Copolymer
molecular structure · PubChem
AKA: Film Former
Synthetic
Not Clean
OriginProduced from methacrylic acid and styrene, both petroleum-derived organic compounds in the acrylic polymer family. Synthesized through free-radical polymerization, combining the two monomers via chemical cross-linking.
2-Propenoic acid, 2-methyl-, sodium salt, polymer with ethenylbenzene
CAS #
33970-45-5
Form
Liquid
State
Solid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Opacifying
Opacifying, Anti
Inflammatory, Antimicrobial, Fights Acne, Creates creamy opacity
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Restricted By
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2014
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR
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