Styrene/VA Copolymer
AKA “Styrene-Vinyl Acetate Copolymer, Styrene/VA
Ingredient
Ingredient Facts
Styrene/va copolymer
AKA: Styrene-Vinyl Acetate Copolymer
Ingredient · Film Forming · EWG: 4
Synthetic
Occlusive
Not Clean
Acetic acid ethenyl ester, polymer with ethenylbenzene
CAS #
25213-29-0
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 combining styrene with vinyl acetate, developed in the mid-20th century for use in cosmetics as a film-forming and suspending agent. Created for modern formulation needs.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR