4-FLUORO-6-METHYL-M-PHENYLENEDIAMINE SULFATE is graded A (Safe) by Expert·ING, based on COSING regulatory data.
4-FLUORO-6-METHYL-M-PHENYLENEDIAMINE SULFATE
Safety grade: A
This is a synthetic chemical compound used in permanent hair dye formulations. It belongs to a family of chemicals that react with other dye ingredients to create long-lasting color inside the hair shaft.
It is used as an oxidative hair dye intermediate, meaning it chemically bonds within the hair to produce rich, permanent color that resists washing out.
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