VA/CA Copolymer
AKA “Vinyl Acetate/Crotonic Acid Copolymer
Ingredient
Ingredient Facts
Va/ca copolymer
AKA: Vinyl Acetate/Crotonic Acid Copolymer
Ingredient · Film Forming · EWG: 4
Synthetic
Occlusive
Not Clean
VA/CA Copolymer is a cosmetic ingredient. Assessed as safe by the CIR.
CAS #
25609-89-6
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.
Viscosity Controlling
Traditional Use
A synthetic resin copolymer developed in the 20th century for cosmetic applications. Used as a film-forming and adhesive agent in mascara, eyeliner, and nail lacquers.
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
Phototoxicity Concern
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR