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Thickener

POLYMETHACRYLIC ACID

CAS 25087-26-7 Updated
70

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A water-soluble acrylic polymer used to thicken and stabilize cosmetic gels. The polymer itself is inert, but residual monomer (methacrylic acid) is corrosive and must be controlled.

Function

FILM FORMINGVISCOSITY CONTROLLING

Skin benefits

  • Gel/cream thickening
  • Suspension stability
  • Film formation

Known concerns

  • Possible residual corrosive monomer
  • Not biodegradable
  • Limited cosmetic-specific tox data

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.