The ingredient, explained
Polymethyl Methacrylate
Polymethyl Methacrylate has published research relevant to cosmetic safety assessment.
Ingredient guide
What it is and what it does
2-Propenoic acid, 2-methyl-, methyl ester, homopolymer
About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗
- Film forming
- Leaves a continuous layer on skin, hair or nails after application.
Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗
Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.
A closer look
What the research shows
Safety assessment
The assessment uses human and animal medical-device data in evaluating the substantially equivalent cosmetic polymer.
What this does not tell us
Safety read-across to specified cosmetic polymer uses, not efficacy or environmental assessment. This is distinct from methyl methacrylate monomer.
Sources for this summary. DOI 10.1177/1091581811407352 ↗
Research review checked Oct 1, 2026
Selective exact-identity review of 1 supplied local candidates and the targeted primary-source search recorded below. Bounded review, not a systematic search.
Ingredient research is not proof that a product containing this ingredient works.
Follow the formula
Products containing this ingredient
From the wider catalogue. Linked by the ingredient list, without an efficacy ranking.
Names and identifiers
Registry identity
2-Propenoic acid, 2-methyl-, methyl ester, homopolymer
- INCI name on ingredient lists
- POLYMETHYL METHACRYLATE
- CAS registry number
- 9011-14-7
Sources for this ingredient record
- EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗ · ODbL 1.0 (Open Beauty Facts database) · Recorded Aug 8, 2026