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Film Former

BUTYL ACRYLATE/STYRENE COPOLYMER

CAS 25767-47-9 Updated
60

Safety score · 0–100

Fine

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

About

A film-forming copolymer of butyl acrylate and styrene. Polymerised form is largely inert, but residual styrene is an IARC 2A concern, so high-purity grades are required for cosmetic use.

Function

FILM FORMING

Skin benefits

  • Durable films
  • Pigment binding
  • Long-wear formulations

Known concerns

  • Styrene monomer is IARC Group 2A
  • Residual monomer in lower-purity batches
  • Microplastic environmental concern
  • Possible skin sensitisation

References

EU

EU CosIng database

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

Related film formers

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BIS-(HEA POLYCAPROLACTONE) PEG-2/PPG-3/IPDI COPOLYMER
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BIS-(HEMA/ETHYLHEXYL) POLY(1,4-BUTANEDIOL)-9/TMDI/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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BIS-HEMA POLY(1,4-BUTANEDIOL)-9/IPDI COPOLYMER
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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.