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STYRENE/METHYLSTYRENE COPOLYMER

CAS 9011-11-4 / 37218-15-8
87

Safety score · 0–100

Good

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

About

A film-forming polymer resin used in cosmetics for its binding and film-forming properties, creating a smooth protective layer on skin and hair.

Styrene/Methylstyrene Copolymer is a film-forming polymer resin used as a binder and film former in cosmetic formulations. It is not listed in EU CosIng restricted annexes and carries no GHS hazard statements. As a high molecular weight polymer, it does not penetrate the skin barrier. It is approved for cosmetic use in both rinse-off and leave-on products in the EU and globally.

Skin benefits

  • Film-forming – creates protective barrier on skin
  • Provides long-lasting wear in cosmetics
  • Smooth finish and texture enhancement

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.