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tert-Butyl hydroperoxide

CAS 75-91-2
28

Safety score · 0–100

Caution

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

Tert-butyl Hydroperoxide is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

tert-Butyl hydroperoxide is a strong oxidizing agent and radical initiator classified under EU Annex III (part 3) as restricted in cosmetic products. Repeated skin contact may cause organ toxicity (H373), and it is a severe skin irritant (H314). Its use in cosmetics is highly limited due to potent oxidative hazard.

Known concerns

  • Severe skin irritant (H314)
  • Organ toxicity from repeated exposure (H373)
  • Strong oxidizing agent — fire/explosion risk
  • EU Annex III restricted in cosmetics

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.