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Hair Conditioning

2,4-DIAMINOPHENOL HCL

CAS 137-09-7
25

Safety score · 0–100

Caution

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

An aromatic diamine hair-dye precursor (Amidol HCl). EU Annex III restricted with sensitization and mutagenicity concerns; not for skin care.

Function

HAIR DYEING

Skin benefits

  • Imparts hair color

Known concerns

  • EU Annex III hair dye restriction
  • Strong sensitizer
  • Mutagenicity concerns

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.