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Depilatory

PHENOL/STYRENE/METHYLSTYRENE COPOLYMER

CAS 77939-50-5 Updated
55

Safety score · 0–100

Moderate

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

About

An aromatic copolymer used as a depilatory hair-removal binder. Cured polymer is inert, but residual phenol, styrene (IARC 2A), and methylstyrene monomers make this a Moderate-risk ingredient requiring careful sourcing.

Function

DEPILATORY

Skin benefits

  • Functions as depilatory binding polymer
  • Adheres to hair for mechanical removal
  • Provides film integrity in epilation systems

Known concerns

  • Free phenol monomer is toxic and corrosive
  • Styrene is IARC Group 2A (probably carcinogenic to humans)
  • Methylstyrene is a respiratory irritant
  • Polymer purity controls are critical for safety

References

EU

EU CosIng database

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

Related depilatorys

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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.