2,2'-METHYLENEBIS-4-AMINOPHENOL is graded A (Safe) by Expert·ING, based on COSING regulatory data.
2,2'-METHYLENEBIS-4-AMINOPHENOL
Safety grade: A
This is a synthetic chemical compound used in hair coloring products. It acts as a dye coupler, helping to create and develop color when combined with other hair dye components.
This ingredient is used in hair dye formulations to help develop and fix color onto the hair shaft, contributing to longer-lasting and more vibrant 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