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Hair Colorant

2,4-DIAMINODIPHENYLAMINE

CAS 136-17-7 Updated
18

Safety score · 0–100

Avoid

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

About

A diamine hair-dye precursor. Aromatic amines of this class are strong skin sensitisers and SCCS-restricted; not appropriate outside oxidative hair colour.

Function

HAIR DYEING

Skin benefits

  • Hair-dye colour intermediate

Known concerns

  • Aromatic amine — known sensitiser
  • SCCS-restricted hair-dye precursor
  • Potential genotoxicity concerns
  • Not approved for skin contact products

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.