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Film Former

PPG-51/SMDI COPOLYMER

CAS 9042-82-4 Updated
74

Safety score · 0–100

Fine

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

About

A PPG-urethane polymer used in hairsprays and gels for silky long-wear films. Cured polymer is well-tolerated; residual SMDI (a saturated diisocyanate) is the main flag and behaves like other aliphatic isocyanates.

Function

FILM FORMINGHAIR CONDITIONINGHAIR FIXING

Skin benefits

  • Silky hair-styling film
  • Conditioning effect
  • Improves humidity resistance
  • Long-wear hold

Known concerns

  • Trace residual SMDI possible — sensitiser
  • Not biodegradable
  • Limited published cosmetic-specific safety data
  • Possible irritation in eye-area products

References

EU

EU CosIng database

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

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BUTYL DIMETHICONE PROPYL METHACRYLATE/METHYL METHACRYLATE/VA 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.