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T-BUTYL BENZOYL PEROXIDE

CAS 614-45-9
8

Safety score · 0–100

Avoid

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

Tert-butyl peroxybenzoate — an industrial radical initiator and strong oxidiser, not a finished-cosmetic ingredient. Sensitising and irritating. Should not appear in leave-on cosmetics.

Function

UV ABSORBER

Skin benefits

  • Primarily a polymerisation initiator, not a cosmetic functional ingredient

Known concerns

  • Organic peroxide — strong oxidiser and skin sensitiser
  • GHS hazards include skin and eye irritation
  • Reactive — not a finished cosmetic ingredient
  • Inappropriate for leave-on cosmetic use
  • Used as radical initiator in industrial polymerisation

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, so always read the physical product label and consult a healthcare professional for personal concerns.