2,6-DIAMINOPYRIDINE is graded A (Safe) by Expert·ING, based on COSING regulatory data.
2,6-DIAMINOPYRIDINE
Safety grade: A
This is a synthetic chemical compound used in hair dye formulas. It acts as a color-forming agent that reacts with other dye components to create specific hair shades, particularly cooler tones.
It is used in permanent and semi-permanent hair color products as a dye intermediate, meaning it combines with oxidizing agents and other dye molecules to produce lasting color in the hair shaft.
Graded using: COSING.
Last verified: May 26, 2026
Other Hair Dyeing ingredients
- RESORCINOL — Grade E**
- THYMOL — Grade A
- M-AMINOPHENOL — Grade C**
- P-AMINOPHENOL — Grade C**
- 2-METHYLRESORCINOL — Grade C
- 4-AMINO-2-HYDROXYTOLUENE — Grade C
- P-PHENYLENEDIAMINE — Grade D**
- 2-METHYL-5-HYDROXYETHYLAMINOPHENOL — Grade C