Restricted hair-dye intermediate
HYDROXYPROPYL PHENYLHYDRAZINOYL T-BUTYLCARBAMATE
Safety score · 0–100
Caution
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
Hydrazine-based hair dye intermediate. Hydrazine chemistry is associated with mutagenicity and sensitization, and the substance is not on the EU positive list, so cosmetic use is disallowed.
Skin benefits
- Designed as an oxidative hair dye coupler intermediate
- Provides shade development in permanent hair coloring systems
Known concerns
- Phenylhydrazine and hydrazine derivatives are flagged as mutagenic and carcinogenic
- Not present in EU Annex III positive list of permitted hair-dye substances
- Strong skin sensitization potential
- Hydrazine chemistry raises systemic toxicity concerns
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related restricted hair-dye intermediates
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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.