Polymethyl Methacrylate
Plant-Derived Synthetic
Occlusive
Not Clean
2-Propenoic acid, 2-methyl-, methyl ester, homopolymer
CAS #
9011-14-7
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
UV Protection
Fights Bacteria
Traditional Use
A synthetic acrylic polymer developed in the early 20th century. Used in cosmetics since the mid-20th century as a film-forming agent, absorbent, and in color cosmetics for texture and spreadability.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️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