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Styrene/Acrylates Copolymer
AKA “Styrene acrylate copolymer, acrylic resin”
Synthetic
Ingredient Facts
Styrene/acrylates copolymer
AKA: Styrene acrylate copolymer, Acrylic resin
Synthetic · Film Forming · EWG: 2
Synthetic
Occlusive
Skin Conditioner
Synthetic
Clean
Creates a smooth, protective layer on skin while adding opacity and coverage to the formula.
CAS #
27306-39-4, 25034-86-0, 25085-34-1, 9010-92-8
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
Occlusive
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Smoothing
Creates Protective Barrier
Adds Opacity
Creates protective layer
Creates creamy opacity
Traditional Use
A synthetic polymer developed in the mid-20th century through petrochemical synthesis. Used in cosmetics as a film-forming agent and thickener, particularly in hair care and styling products.
Skin Types
●all-skin-types, gentle
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
2
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-2
medical-approval
pregnancy-nursing-safe
all-shades-safe
Concentration Guide
0.06%
0%0%
Reg. Limit
EU/SCCS limit: 0.06% in cosmetic products. Opinion: SCCS/1595/18
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Feb 2026
Data: CosIng · EWG · CIR