Oxidative hair dye precursor
HYDROXYETHYL-P-PHENYLENEDIAMINE SULFATE
Safety score · 0–100
Caution
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
Hydroxyethyl-p-phenylenediamine sulfate is a permanent hair dye precursor in the PPD family. EU SCCS judged it not safe at 1.5% in oxidative dyes, and PPD-class chemicals are notorious skin sensitizers.
Skin benefits
- Provides permanent oxidative color in hair dyes when reacted with hydrogen peroxide
- Offers a chestnut to brown shade in professional hair coloring formulations
Known concerns
- SCCS concluded use as oxidative hair dye at 1.5% poses a risk to consumer health
- Moderate acute oral toxicity in animals (LD50 80-150 mg/kg)
- Member of the p-phenylenediamine family known for strong skin sensitization
- Risk of allergic contact dermatitis and cross-reactivity with PPD-allergic users
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related oxidative hair dye precursors
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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.