2,6-DIMETHYL-P-PHENYLENEDIAMINE HCL is graded A (Safe) by Expert·ING, based on COSING regulatory data.
2,6-DIMETHYL-P-PHENYLENEDIAMINE HCL
Safety grade: A
This is a synthetic chemical compound used in permanent hair dyes. It works by reacting with other dye ingredients to create color molecules that penetrate the hair shaft and produce lasting color.
It is used in hair coloring products as a dye intermediate, meaning it chemically reacts during the coloring process to form the pigment molecules that give hair its new, long-lasting color.
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