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Skin Lightening (banned in EU cosmetics)

HYDROQUINONE

CAS 123-31-9
5

Safety score · 0–100

Avoid

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

A skin-lightening phenol banned in EU cosmetics for general use (Annex II). PubChem GHS flags it as a suspected carcinogen, mutagen and skin sensitiser — only ever used under medical supervision.

Function

ANTIOXIDANTBLEACHINGHAIR DYEINGFRAGRANCEREDUCING

Skin benefits

  • Inhibits tyrosinase and melanin synthesis (medical only)

Known concerns

  • EU Annex II ban for cosmetic use
  • Suspected carcinogen/mutagen
  • Strong sensitiser
  • Causes exogenous ochronosis

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.