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2-ACETYLHYDROQUINONE

CAS 490-78-8
35

Safety score · 0–100

Caution

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

About

2-ACETYLHYDROQUINONE is a cosmetic ingredient used in product formulation. Exercise caution due to limited available safety data.

2-Acetylhydroquinone is an aromatic ketone that functions as a hair dye precursor in oxidative coloration systems. The SCCS has expressed concern due to structural similarity to compounds with genotoxic potential, and it is subject to restriction under EU Annex III when used in hair dye formulations. Strict concentration limits and mandatory pre-mixing with an oxidising agent apply.

Skin benefits

  • Enables deep, long-lasting hair colour development

Known concerns

  • SCCS concern regarding potential genotoxicity
  • EU Annex III restricted with strict concentration limits
  • Must be pre-mixed with oxidising agent before application
  • Not permitted in non-oxidative hair dye products

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