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HYDROXYETHYL-P-PHENYLENEDIAMINE SULFATE

CAS 93841-25-9
45

Safety score · 0–100

Moderate

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

About

A hair dye intermediate restricted in the EU to oxidative hair dye formulations with strict concentration limits due to skin sensitization risk.

Listed in EU Annex III/206, this p-phenylenediamine derivative is restricted to oxidative hair dye formulations with a maximum on-head concentration of 2% (as free base). It carries skin sensitization warnings and requires specific labeling precautions. Used only in professional hair dye applications under controlled conditions.

Known concerns

  • Skin sensitizer (restricted under Annex III/206)
  • Restricted to oxidative hair dye only
  • Requires specific labeling per EU cosmetic regulation

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.