VA/Butyl Maleate/Isobornyl Acrylate Copolymer

VA/Butyl Maleate/Isobornyl Acrylate Copolymer 1
photograph
AKA: Vinyl Acetate/Butyl Maleate/Isobornyl Acrylate Copolymer
Synthetic
Occlusive
Clean
OriginSynthesized from vinyl acetate, butyl maleate, and isobornyl acrylate monomers, which are petroleum-derived chemicals. Produced through free-radical polymerization of these monomers to create a cross-linked copolymer film-former.
2-Butenedioic acid (2Z)-, dibutyl ester, polymer with ethenyl acetate and rel-(1R,2R,4R)-1,7,7-trimethylbicyclo[2.2.1]hept-2-yl 2-propenoate
Formula
C29H46O8
Mol. Weight
522.7
CAS #
136392-68-2
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
The paper trail
🔬Peer-reviewed1 paper →
⚖️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
CIR Safety Findings
Not a Sensitizer
2 studies / 2 not sensitizing (CIR 763)
Mixed Phototoxicity Results
Both phototoxic and non-phototoxic results in the CIR safety assessment (CIR 763)
Mixed Skin Irritation Results
3 studies / 1 irritating / 2 not irritating / reactions slight (CIR 763)
Eye Irritant in Testing
1 study / 1 irritating / reactions moderate to severe (CIR 763)
Concentration Guide
Leave-on1.3–10%
Rinse-offNot reported
0%50%100%
CIR reported use · 2018 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR