1,3-BIS-(2,4-DIAMINOPHENOXY)PROPANE HCL 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 HCL
Safety grade: C**
This is a synthetic chemical compound used in hair coloring products. It acts as a color-developing ingredient that helps create permanent or long-lasting hair dye shades.
It is used in hair dye formulations as an oxidative dye coupler or base, helping to produce and fix color molecules within the hair shaft for lasting color results.
Graded using: COSING.
- EU COSING — Restricted
Last verified: May 26, 2026
Safer alternatives to 1,3-BIS-(2,4-DIAMINOPHENOXY)PROPANE HCL
- 2-METHOXYMETHYL-P-PHENYLENEDIAMINE — Grade A. Oxidative hair dye base that develops color in hair shaft like the original
- 5-AMINO-6-CHLORO-O-CRESOL — Grade A. Oxidative dye intermediate capable of forming color molecules in hair
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