1,3-BIS-(2,4-DIAMINOPHENOXY)PROPANE is graded C (Moderate) by Expert·ING, based on COSING regulatory data. It is restricted under EU COSING — AnnexIII-SAFETY-.
1,3-BIS-(2,4-DIAMINOPHENOXY)PROPANE
Safety grade: C
This is a synthetic chemical compound used in hair coloring products. It acts as a color-developing agent that helps create and fix hair dye shades when combined with other coloring ingredients.
This ingredient is used in hair dye formulations as a coupler or color precursor, reacting with oxidizing agents to produce long-lasting color that penetrates the hair shaft.
Graded using: COSING.
- EU COSING — Restricted
Last verified: May 26, 2026
Safer alternatives to 1,3-BIS-(2,4-DIAMINOPHENOXY)PROPANE
- 2-METHOXYMETHYL-P-PHENYLENEDIAMINE — Grade A. Oxidative hair dye precursor that couples with oxidizing agents to create permanent color.
- 5-AMINO-6-CHLORO-O-CRESOL — Grade A. Oxidative hair dye intermediate that reacts with oxidizers to produce long-lasting hair color.
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