Hydroxypropyl Methacrylate
molecular structure · PubChem
AKA: Rocryl 410, 1, 2-Propanediol, Monomethacrylate, 2-methyl, Methacrylic acid, Monoester with 1, 2-propanediol, 2-Propenoic acid, 2-hydroxymethylethyl ester
Synthetic
Occlusive
Clean
2-Propenoic acid, 2- methyl-, Monoester with 1,2-Propanediol
Solubility Limited solubility in water, sol in common organic solvents
Formula
C7H12O3
Mol. Weight
144.17
CAS #
27813-02-1
Form
Powder
State
Hydroxypropyl methacrylate appears as white liquid with a light unpleasant odor. May float or sink in water. (USCG, 1999)
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 synthetic acrylic polymer precursor developed mid-20th century in industrial chemistry. Adapted for cosmetic use as a film-forming and texturizing agent in modern skincare and cosmetic products.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR