Behenyl Methacrylate/t-Butyl Methacrylate Copolymer

AKA: Behenyl methacrylate copolymer

Synthetic

Occlusive

Not Clean

OriginSynthesized from behenyl methacrylate and t-butyl methacrylate monomers derived from petrochemical sources. Produced through free radical polymerization of the two methacrylate monomers to form a copolymer chain.

Behenyl Methacrylate/t-Butyl Methacrylate Copolymer is a copolymer of behenyl methacrylate and t-butyl methacrylate monomers

CAS #

-

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.

Improves Elasticity

Moisturizing

Creates protective layer

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

CIR

Safe as used

Pregnancy

Yes

Concentration Guide

CIR's newest survey reports no concentration of use.

CIR · 2018 survey

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Verified Jun 2026

Data: CosIng · EWG · CIR