Acrylates/PEG-4 Dimethacrylate Crosspolymer

AKA: Acrylic copolymer, Film-forming polymer

Synthetic

Occlusive

Not Clean

OriginSynthesized from acrylic acid derivatives and polyethylene glycol (PEG) monomers from petroleum sources. Produced through free-radical polymerization and crosslinking of acrylate and dimethacrylate monomers.

Acrylates/PEG-4 Dimethacrylate Crosspolymer is a copolymer of one or more monomers of acrylic acid, methacrylic acid or one of their simple esters crosslinked by PEG-4 dimethacrylate

CAS #

50657-38-0

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.

Creates Protective Barrier

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed2 reviews →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

EWG

CIR

Safe as used

Pregnancy

Yes

Restricted By

Credo Beauty Whole Foods Premium Body Care Beauty Heroes MADE SAFE EWG VERIFIED

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

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Verified Jun 2026

Data: CosIng · EWG · CIR