ghk-cu copper coordination geometry changes the conversation. pairs the Gly-His-Lys tripeptide with Cu² GHK-Cu Copper Tripeptide-1 | Research

GHK Cu Copper Tripeptide 1 Research Reagent Aqueous Solution Equilibria and Spectral Features of Copper Complexes with Tripeptides Containing Glycine or Sarcosine and Leucine or Phenylalanine 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 Figure 1 from GHK Copper Peptide in Skin Remodeling and Anti Aging ! GHK Cu in Skin Remodeling Semantic Scholar

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