Precursors are molecules that, in an oxidative environment – such as in the presence of hydrogen peroxide – react with couplers to form colourant molecules inside the hair. They are the foundation of permanent hair dye formulations.
- Chosen byParafenilendiaminaProperties
CAS: 106-50-3
INCI:
p-Phenylenediamine
- Chosen byPara-AmminofenoloProperties
CAS: 123-30-8
INCI:
p-Aminophenol
- Chosen by2,5-Diamminotoluene SolfatoProperties
CAS: 615-50-9
INCI:
Toluene-2,5-Diamine Sulfate
- Chosen by4,5-Diammino-1-(2-Idrossietil) Pirazolo SolfatoProperties
CAS: 155601-30-2
INCI:
1-Hydroxyethyl-4,5-Diamino Pyrazole Sulfate
- Chosen byN,N-Bis(2-Idrossietil)-1,4-Fenilendiamina SolfatoProperties
CAS: 54381-16-7
INCI:
N,N-Bis(2-Hydroxyethyl)-p-Phenylenediamine Sulfate
- Chosen by4-Ammino-3-MetilfenoloProperties
CAS: 2835-99-6
INCI:
4-Amino-m-Cresol
- Chosen byN-Fenil-p-Fenilendiamina SolfatoProperties
CAS: 4698-29-7
INCI:
N-Phenyl-p-Phenylenediamine Sulfate
- Chosen byMetoloProperties
CAS: 55-55-0
INCI:
p-Methylaminophenol Sulfate