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Colorant

2,4-DIAMINOPHENOXYETHANOL SULFATE

CAS 70643-20-8
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 intermediate. Functional in permanent color but a known allergen; EU restricts use strictly to oxidative hair dye in rinse-off.

Function

HAIR DYEING

Skin benefits

  • Effective oxidative hair-dye intermediate
  • Used in permanent hair color

Known concerns

  • Aromatic amine — strong sensitization risk
  • EU restricted to rinse-off oxidative hair color only
  • Not for skin contact
  • Possible mutagenicity in class
  • Allergic contact dermatitis well documented

References

EU

EU CosIng database

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

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Same plant / compound family

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2,4-DIAMINOPHENOXYETHANOL HCL
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2,4-Diaminophenoxyethanol, its hydrochloride and its sulphate

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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.