Polybutyl Acrylate

Polybutyl Acrylate 1
photograph
AKA: PBA, Poly(butyl acrylate)
Synthetic
Occlusive
Not Clean
OriginSynthesized from butyl acrylate monomers, which are derived from acrylic acid and butanol through esterification reactions. Produced via free radical polymerization of butyl acrylate monomers in controlled industrial reactors.
Poly[1-(butoxycarbonyl)ethylene]
CAS #
9003-49-0
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Binding
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Holds Formula Together
Creates Protective Barrier
Creates protective layer
Holds ingredients together
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
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 2018
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR