OriginDerived from methacrylic acid and propylene oxide, belonging to the acrylic polymer chemical family. Synthesized through esterification of hydroxypropyl alcohol with methacrylic acid or its derivatives.
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)
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
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
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.
EWG
2
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Skin Irritant in Testing
1 study / 1 irritating / reactions mild (CIR 339)
Mixed Sensitization Results
4 studies / 3 sensitizing / 1 not sensitizing / reactions weak / plus 9 case reports (CIR 339)
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