Styrene/Acrylates/Ammonium Methacrylate Copolymer
AKA “Film-forming polymer, Styrene acrylate copolymer
Ingredient
Ingredient Facts
Styrene/acrylates/ammonium methacrylate copolymer
AKA: Film-forming polymer, Styrene acrylate copolymer
Ingredient · Film Forming · EWG: 2
Synthetic
Occlusive
Clean
Styrene/Acrylate/Ammonium Methacrylate Copolymer
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.
Opacifying
Creates Protective Barrier
Adds Opacity
Creates protective layer
Creates creamy opacity
Traditional Use
A synthetic polymer developed in the 20th century for cosmetic use as a film-forming and thickening agent. Created through modern polymer chemistry without traditional historical precedent.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR