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Film Former

BUTADIENE/ACRYLONITRILE COPOLYMER

CAS 9003-18-3
60

Safety score · 0–100

Fine

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

A nitrile rubber polymer used as a film former in cosmetics. Bulk polymer is inert, but residual butadiene (Group 1 carcinogen) and acrylonitrile (Group 2B) monomers make purity-grade controls critical.

Function

FILM FORMINGVISCOSITY CONTROLLING

Skin benefits

  • Forms durable elastic films
  • Improves wear time and water resistance
  • Modifies viscosity in formulations

Known concerns

  • Residual acrylonitrile is IARC Group 2B (possibly carcinogenic to humans)
  • Residual 1,3-butadiene is IARC Group 1 carcinogen
  • Polymer purity depends on manufacturer specs

References

EU

EU CosIng database

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

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BIS-(HEA POLYCAPROLACTONE) PEG-2/PPG-3/IPDI COPOLYMER
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BIS-(METHOXY PEG-9 CARBAMOYL) POLY-SMDI
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BIS-HEA POLYDIETHYLENEGLYCOL ADIPATE/IPDI COPOLYMER
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BIS-HEMA POLOXAMER 251/IPDI COPOLYMER
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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.