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Banned Substance

2,4-Diaminodiphenylamine, when used as a substance in hair dye products

CAS 136-17-4
18

Safety score · 0–100

Avoid

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

2,4-Diaminodiphenylamine, a hair-dye intermediate now banned in EU cosmetics — carries acute oral, dermal and inhalation toxicity plus skin sensitization. No permitted cosmetic concentration.

Skin benefits

  • Primarily a processing aid

Known concerns

  • EU Annex II banned in cosmetics
  • Acute toxicity (H301+H311+H331)
  • Strong skin sensitizer (H317)
  • Suspected mutagenicity
  • Serious eye damage risk

References

EU

EU CosIng database

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

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Same plant / compound family

18
2,4-DIAMINODIPHENYLAMINE
Hair Colorant

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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.