2,6-DIMETHOXY-3,5-PYRIDINEDIAMINE HCL is graded C** (Moderate) by Expert·ING, based on COSING regulatory data. It is restricted under EU COSING — AnnexIII-SAFETY-.
2,6-DIMETHOXY-3,5-PYRIDINEDIAMINE HCL
Safety grade: C**
This is a synthetic chemical compound used in permanent and semi-permanent hair dyes. It acts as a color-forming ingredient that helps create specific shades when combined with other dye components.
It is used in hair coloring products as a dye intermediate, meaning it reacts with other chemicals during the dyeing process to develop and deposit color onto the hair strand.
Graded using: COSING.
- EU COSING — Restricted
Last verified: May 26, 2026
Safer alternatives to 2,6-DIMETHOXY-3,5-PYRIDINEDIAMINE HCL
- 2-METHOXYMETHYL-P-PHENYLENEDIAMINE — Grade A. Direct hair dye intermediate that develops color through oxidative coupling like the source ingredient.
- LAWSONIA INERMIS EXTRACT — Grade A. Plant-based dye source providing natural hair coloring with safer safety profile than synthetic intermediates.
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