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Film Former

METHYLSTYRENE/VINYLTOLUENE COPOLYMER

CAS 9017-27-0
42

Safety score · 0–100

Moderate

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

A styrene-toluene-based film former used in nail and long-wear makeup. Monomer-grade GHS shows skin, eye and respiratory irritation; microplastic concerns also apply.

Function

VISCOSITY CONTROLLING

Skin benefits

  • Film former
  • Long-wear adhesion
  • Volume in makeup

Known concerns

  • Skin and eye irritation (H315/H319)
  • Respiratory irritation (H335)
  • Styrene-class IARC 2B for vinyltoluene
  • Microplastic/persistence concerns

References

EU

EU CosIng database

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

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ISOBUTYL METHACRYLATE
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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.