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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.

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