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Thickener

OCTADECENE/MA COPOLYMER

CAS 25266-02-8
76

Safety score · 0–100

Fine

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

An octadecene-maleic anhydride copolymer (CAS 25266-02-8) used as a film former and viscosity controller in color cosmetics. Cosmetic-grade polymer with standard residual-monomer caveats.

Function

LIGHT STABILIZERVISCOSITY CONTROLLING

Skin benefits

  • Film-forming agent
  • Light stabilizer
  • Viscosity controller
  • Improves wear in colour cosmetics

Known concerns

  • Possible residual maleic anhydride hydrolysing to maleic acid
  • Limited skin sensitization data for some grades

References

EU

EU CosIng database

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

Related thickeners

Same plant / compound family

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