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Oxidiser

HYDROGEN PEROXIDE

CAS 7722-84-1
55

Safety score · 0–100

Moderate

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

A potent oxidiser used in hair colouring, bleaching and tooth whitening. Safe and effective at strict EU concentration caps but corrosive and irritating if misused — never a general skincare ingredient.

Skin benefits

  • Effective oxidiser for hair colouring and bleaching
  • Used at strict EU caps for teeth whitening
  • Antiseptic action at low concentrations

Known concerns

  • Corrosive and damaging at higher concentrations
  • Skin and eye irritant
  • EU Annex III limits — max 12% in hair, 0.1% in oral care for general consumers
  • Damages hair structurally over time

References

EU

EU CosIng database

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

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

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Same plant / compound family

45
Hydrogen peroxide and other compounds or mixtures that release hydrogen peroxide, including carbamide peroxide and zinc peroxide, with the exception of the following substances in Annex II: No 1397, 1398, 1399
Oxidizing/bleaching agent

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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.