2-CHLORO-P-PHENYLENEDIAMINE SULFATE is graded A (Safe) by Expert·ING, based on COSING regulatory data.
2-CHLORO-P-PHENYLENEDIAMINE SULFATE
Safety grade: A
This is a chemical compound used in permanent and semi-permanent hair dyes to create color. It works by reacting with other dye ingredients inside the hair shaft to produce a lasting color change.
It is used in hair coloring products as a dye intermediate, meaning it helps form and fix color molecules within the hair to achieve long-lasting hair color results.
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