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Colorant

PYROGALLOL

CAS 87-66-1
8

Safety score · 0–100

Avoid

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

Pyrogallol — a powerful old-school hair-dye and developer, listed on EU Annex II as banned in cosmetics with only narrow professional hair-dye exceptions. Acutely toxic and a suspected mutagen.

Function

HAIR DYEING

Skin benefits

  • Strong reducing/colouring agent
  • Historic use in hair dye
  • No modern leave-on use

Known concerns

  • EU Annex II banned in cosmetics (with limited Annex III exception for hair dye)
  • GHS H341 suspected mutagen
  • H302/H312/H332 acutely toxic by all routes
  • Strong skin sensitiser and possible carcinogen

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.