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Hair Dye

LAWSONE

CAS 83-72-7 Updated
8

Safety score · 0–100

Avoid

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

About

The reactive dye in henna. As a pure compound it is on EU Annex II — banned in cosmetics — because the SCCS judged it genotoxic. Only allowed via the whole henna plant in hair dye.

Function

HAIR DYEING

Skin benefits

  • Henna hair-dye colourant — only via the whole plant

Known concerns

  • EU Annex II — pure lawsone banned in cosmetics
  • Genotoxic/mutagenic in vitro and in vivo per SCCS
  • Only allowed via henna leaf at <0.35% lawsone in hair dye

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.