Acrylates/Ammonium Methacrylate Copolymer

AKA: Ammonium Methacrylate Acrylates Copolymer, Film Forming Polymer

Synthetic

Occlusive

Clean

Ammonium butenoate, polymer with propenoic acid, butenoic acid, and/or alkyl propenoates

Form

Liquid

State

Solid

Functions

Antistatic

Film Forming

Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.

Reduces Static

Creates Protective Barrier

Creates protective layer

Reduces flyaways

Traditional Use

A synthetic polymer developed for cosmetic use. Functions as a thickening and stabilizing agent in modern skincare and haircare formulations.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not a Sensitizer

ewg-2

medical-approval

pregnancy-nursing-safe

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

Skin Types

●all-skin-types, gentle

Best For

General

Pregnancy & Breastfeeding Safe

Yes

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed4 reviews →

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

Verified Jun 2026

Data: CosIng · EWG · CIR