Acrylates/Steareth-20 Methacrylate Crosspolymer
molecular structure · PubChem
AKA: Acrylic copolymer, Film-forming polymer
Plant-Derived
Occlusive
Not Clean
Acrylates/Steareth-20 Methacrylate Crosspolymer is a copolymer of steareth-20 methacrylate and one or more monomers consisting of acrylic acid, methacrylic acid or one of their simple esters, crosslinked with an allyl ether of pentaerythritol or an allyl ether of trimethylolpropane
CAS #
-
Form
Liquid
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Creates Protective Barrier
Traditional Use
A cross-linked synthetic polymer developed for the cosmetics industry in the late 20th century. Used to stabilize emulsions and improve texture in creams and lotions.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR