TOLUENE-2,5-DIAMINE SULFATE is graded D** (High Concern) by Expert·ING, based on COSING regulatory data. It is restricted under EU COSING — AnnexIII-SAFETY-.
TOLUENE-2,5-DIAMINE SULFATE
Safety grade: D**
This is a chemical compound used as a colorant in hair dyes. It works by penetrating the hair shaft and bonding with the hair structure to create lasting color.
This ingredient is a hair dye intermediate that reacts with other dye components to produce permanent or semi-permanent hair color.
Graded using: COSING.
- EU COSING — Restricted
- Health Canada — Restricted
Last verified: May 26, 2026
Safer alternatives to TOLUENE-2,5-DIAMINE SULFATE
- M-AMINOPHENOL — Grade C**. Primary hair dye intermediate that couples with oxidizing agents for permanent color.
- P-AMINOPHENOL — Grade C**. Primary hair dye intermediate that couples with oxidizing agents for permanent color.
- 2-METHYLRESORCINOL — Grade C. Coupler component in oxidative hair dye formulations to develop final hair color.
- 4-AMINO-2-HYDROXYTOLUENE — Grade C. Coupler component in oxidative hair dye formulations to develop final hair color.
Other Hair Dyeing ingredients
- RESORCINOL — Grade E**
- THYMOL — Grade A
- P-PHENYLENEDIAMINE — Grade D**
- 2-METHYL-5-HYDROXYETHYLAMINOPHENOL — Grade C