2,6-Pyridinediamine, 3-(3- pyridinylazo)
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A pyridyl-azo-pyridine hair dye intermediate restricted in the EU to a maximum of 0.25% in ready-for-use preparations.
This compound is a pyridine-based azo dye precursor classified under EU Cosmetics Regulation Annex III, restricted to a maximum concentration of 0.25% in hair dye formulations. While not banned, it requires caution due to potential genotoxic metabolites formed during oxidative hair dyeing processes. It is not permitted in non-oxidative hair dye applications.
Known concerns
- EU Annex III restricted (0.25% max in oxidative hair dyes)
- Potential genotoxic metabolite formation
- Requires coupling agents for safe use
References
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.