Ammonium Acrylates/Methylstyrene/Styrene Copolymer
molecular structure · PubChem
AKA: Acrylic Polymer, Film Forming Polymer
Synthetic
Occlusive
Not Clean
OriginSynthesized from acrylic acid, methyl styrene, and styrene monomers through free-radical polymerization. Produced by combining these monomers in controlled chemical reactions to form a cross-linked copolymer film.
Ammonium Acrylates/Methyl Styrene/Styrene Copolymer is a copolymer consisting of ammonium acrylate, methyl styrene and styrene monomers; Ammonium 2-propenoate, polymer with (1-methylethenyl)benzene and ethenylbenzene
CAS #
-
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.
Creates Protective Barrier
Reduces Inflammation
Locks In Moisture
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory0 listings
🛡️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
Leave-on0.9%
Rinse-offNot reported
0%50%100%
CIR reported use · 2018 survey
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR
murphy