murphyAcrylates/t-Butylacrylamide Copolymer
molecular structure · PubChem
AKA: Acrylic polymer, Film former
Synthetic
Occlusive
Clean
OriginDerived from acrylic acid, methacrylic acid, and their esters combined with tert-butylacrylamide monomers. Synthesized through free-radical polymerization of these monomers to form a cross-linked copolymer film.
Copolymer of ter-butyl acrylamide and one or more monomers of acrylic acid, methacrylic acid or one of their simple esters
Form
Liquid
State
Solid
Skin Types
●all-skin-types, gentle
Best For
General
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Hair Fixing
Creates Protective Barrier
Creates protective layer
Holds hair in place
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
—
CIR Safety Findings
Not a Skin Irritant
2 studies / 2 not irritating (CIR 843)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 843)
Concentration Guide
Leave-on0.06–7%
Rinse-offNot reported
0%50%100%
CIR reported use · 2020 survey
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR