Styrene/VP Copolymer
AKA “Styrene-Vinyl Pyrrolidone Copolymer, Styrene/VP”
Ingredient
Ingredient Facts
Styrene/vp copolymer
AKA: Styrene-Vinyl Pyrrolidone Copolymer
Ingredient · Film Forming · EWG: 4
Synthetic
Occlusive
Not Clean
2-Pyrrolidinone, 1-ethenyl-, polymer with ethenylbenzene
Effective at 5.15%
CAS #
25086-29-7
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
Locks In Moisture
Anti-Aging Benefits
Antioxidant Protection
Creates protective layer
Creates creamy opacity
Traditional Use
A synthetic polymer combining styrene with vinylpyrrolidone, developed in the late 20th century as a film-forming and suspending agent in cosmetics and hair care products.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
Restricted By
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
3.0%
7.3%
0%10%
Effective Range
CIR reported use: 3-7.3
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR