2,6-DIAMINOPYRIDINE SULFATE
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
An aromatic diamine used as a hair dye intermediate in oxidative hair colour formulations. Potential sensitiser requiring pre-mixing with an oxidising agent; not permitted in eyelash or eyebrow products.
2,6-Diaminopyridine sulfate is a primary aromatic diamine hair dye precursor used in oxidative hair coloration systems. It is not specifically listed under EU restriction annexes but must comply with the general safety requirements of Regulation 1223/2009. The SCCS requires that oxidative hair dye intermediates be pre-mixed with an oxidising agent and not used in products intended for eyebrows or eyelashes, as permanent eyelash tinting is not authorised in the EU.
Skin benefits
- Enables permanent hair coloration
Known concerns
- Potential skin and respiratory sensitiser
- Must be pre-mixed with oxidising agent before application
- Not authorised for use in eyebrow/eyelash products in the EU
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 — always read the physical product label and consult a healthcare professional for personal concerns.