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Colorant

Toluene-3,4-diamine and its salts, when used as a substance in hair dye products

CAS 496-72-0
10

Safety score · 0–100

Avoid

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

Toluene-3,4-diamine — a hair-dye actor on the EU Annex II banned-in-cosmetics list. Treat as a no-use ingredient in EU markets.

Skin benefits

  • Historical hair shade use

Known concerns

  • EU Annex II banned for cosmetic use
  • Strong sensitiser
  • Mutagenicity flagged

References

EU

EU CosIng database

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

Related colorants

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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.