DIMETHYLPIPERAZINIUM AMINOPYRAZOLOPYRIDINE HCL [DIMETHYLPIPERAZINIUM AMINOPYRAZOLOPYRIDINE HCL]
Dimethylpiperazinium aminopyrazolopyridine HCL is a colour precursor found in permanent oxidation dyes, and is a molecule patented by L'Oréal. When combined with oxidation couplers, it creates blue violet shades in the hair.