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Colorant

TOLUENE-3,4-DIAMINE

CAS 496-72-0
4

Safety score · 0–100

Avoid

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

Toluene-3,4-diamine is an aromatic diamine hair-dye precursor that is banned for cosmetic use in the EU under Annex II. Strong sensitizer and suspected carcinogen.

Function

HAIR DYEING

Skin benefits

  • No legitimate cosmetic benefit

Known concerns

  • EU Annex II banned
  • Strong sensitizer
  • Suspected carcinogen
  • Mutagenic

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.