murphyButyl Acrylate/Styrene Copolymer
molecular structure · PubChem
AKA: Acrylic Copolymer
Synthetic
Occlusive
Clean
OriginDerived from petroleum-based monomers: butyl acrylate and styrene from the acrylic and aromatic hydrocarbon families. Synthesized through free-radical polymerization of the two monomers in an emulsion or solution process.
2-Propenoic acid, butyl ester, polymer with ethenylbenzene
CAS #
25767-47-9
Form
Liquid
State
Solid
Skin Types
●all-skin-types, gentle
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.
Anti-Inflammatory
Boosts Collagen
Wound Healing
Creates protective layer
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
1
CIR
Safe as used
Pregnancy
Yes
Restricted By
Concentration Guide
Leave-onNot reported
Rinse-off0.25%
0%50%100%
CIR reported use · 2014 survey
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR