Butyldimethicone Methacrylate/Methyl Methacrylate Crosspolymer
AKA “Silicone-acrylate crosspolymer, Film-forming polymer
Synthetic
Ingredient Facts
Butyldimethicone methacrylate/methyl methacrylate crosspolymer
AKA: Silicone-acrylate crosspolymer, Film-forming polymer
Synthetic · Film Forming · EWG: 4
Synthetic
Occlusive
Skin Conditioner
Silicone
Synthetic
Clean
Butyldimethicone Methacrylate/Methyl Methacrylate Crosspolymer is a copolymer of butyl dimethiconemethacrylate and methyl methacrylate monomers crosslinked with ethylene glycol dimethacrylate. Science: Functions: Plasticiser Safety Ratings: CIR: Safe as used
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.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Viscosity Controlling
Adds flexibility
Traditional Use
Modern synthetic copolymer developed for cosmetic film-forming and long-wear applications. Designed to provide improved adhesion and durability in color cosmetics and skincare products.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Caution
EWG
4
CIR
Insufficient
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR