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Film Former

STYRENE METHYLTRIMONIUM CHLORIDE CROSSPOLYMER

CAS 11041-12-6 Updated
65

Safety score · 0–100

Fine

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

About

A positively charged styrene crosspolymer used to soak up excess oil and reduce static on skin and hair. Polymer is inert when cured, but residual styrene (IARC 2A) is the manufacturing-purity concern.

Function

ABSORBENT

Skin benefits

  • Adsorbs oils and impurities
  • Anti-static effect
  • Forms light film for sebum control
  • Reduces shine and frizz

Known concerns

  • Quaternary ammonium — eye irritation potential
  • Residual styrene monomer possible
  • Styrene is IARC Group 2A (probable carcinogen)
  • Not biodegradable

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.