Styrene/VA Copolymer

Styrene/VA Copolymer molecular structure
molecular structure · PubChem
AKA: Styrene-Vinyl Acetate Copolymer
Synthetic
Occlusive
Not Clean
OriginStyrene and vinyl acetate monomers are derived from petroleum-based chemical precursors through synthetic organic chemistry. The copolymer is produced through free radical polymerization, where styrene and vinyl acetate are chemically linked into a polymer chain.
Acetic acid ethenyl ester, polymer with ethenylbenzene
CAS #
25213-29-0
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-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2014
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR