murphyButyl Ester of PVM/MA Copolymer
molecular structure · PubChem
AKA: Film-forming polymer
Synthetic
Occlusive
Clean
OriginSynthesized from vinyl methyl ether/maleic anhydride (PVM/MA) copolymer and butanol as starting materials. Produced through esterification reaction where butanol chemically bonds to the copolymer backbone.
2-Butenedioic acid (Z)-, polymer with methoxyethene, monobutyl ester
CAS #
25119-68-0
Form
Liquid
State
Liquid
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Antistatic
Binding
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Hair Fixing
Anti-Inflammatory
Boosts Collagen
Wound Healing
Creates protective layer
Reduces flyaways
Holds hair in place
Holds ingredients together
The paper trail
🔬Peer-reviewed1 paper →
⚖️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
CIR Safety Findings
Not an Eye Irritant
1 study / 1 not irritating (CIR 95)
Not a Skin Irritant
2 studies / 2 not irritating (CIR 95)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 95)
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR