Your copper peptide product should be this exact blue. If it isn't, you already have your answer. GHK Cu is blue because of coordination chemistry, not dye. The Cu ion at the center Copper Tripeptide (GHK Cu) for Advanced Skincare & Haircare Formulatio Copperbiomolecule complexes in the gas phase. The ternary way Tureek 2007 Mass Spectrometry Reviews Wiley Online Library Copper Peptide GHK Cu for Sale Stanford Advanced Materials
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