Methyl methacrylate crosspolymer
AKA “Polymethyl methacrylate, PMMA, Acrylic polymer”
Ingredient
Ingredient Facts
Methyl methacrylate crosspolymer
AKA: Polymethyl methacrylate, PMMA, Acrylic polymer
Ingredient · Film Forming · EWG: 2
Synthetic
Occlusive
Clean
2-Propenoic acid, 2-methyl-, 1,2-ethanediyl ester, polymer with methyl 2-methyl-2-propenoate
CAS #
25777-71-3
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.
Creates Protective Barrier
Fights Bacteria
Traditional Use
A synthetic polymer developed for industrial and cosmetic applications in the latter half of the 20th century. Used in cosmetics as a film-forming and suspending agent to improve product texture and adherence.
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Caution
Final report of the Cosmetic Ingredient Review Expert Panel safety assessment of polymethyl methacrylate (PMMA), methyl methacrylate crosspolymer, and
Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2011
Final report of the Cosmetic Ingredient Review Expert Panel safety assessment of polymethyl methacrylate (PMMA), methyl methacrylate crosspolymer, and
Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2011
Final report of the Cosmetic Ingredient Review Expert Panel safety assessment of polymethyl methacrylate (PMMA), methyl methacrylate crosspolymer, and
Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2011
Final report of the Cosmetic Ingredient Review Expert Panel safety assessment of polymethyl methacrylate (PMMA), methyl methacrylate crosspolymer, and
Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2011
Final Report of the Cosmetic Ingredient Review Expert Panel Safety Assessment of Polymethyl Methacrylate (PMMA), Methyl Methacrylate Crosspolymer and Methyl Methacrylate/Glycol Dimethacrylate Crosspol
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Butyldimethicone Methacrylate/Methyl Methacrylate Crosspolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
Methyl methacrylate crosspolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
Polymethyl Methacrylate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Methyl methacrylate crosspolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Polymethyl Methacrylate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Jun 2026
Data: CosIng · EWG · CIR