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Behenyl Methacrylate/t-Butyl Methacrylate Copolymer
AKA “Behenyl methacrylate copolymer”
Ingredient
Ingredient Facts
Behenyl methacrylate/t-butyl methacrylate copolymer
AKA: Behenyl methacrylate copolymer
Ingredient · Film Forming · EWG: 4
Synthetic
Occlusive
Not Clean
Behenyl Methacrylate/t-Butyl Methacrylate Copolymer is a copolymer of behenyl methacrylate and t-butyl methacrylate monomers
CAS #
-
Form
Liquid
State
Solid
See origin →
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
Traditional Use
A modern acrylic-based polymer created for cosmetics to provide film-forming and conditioning properties without traditional use history.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR