Copper Peptide Serum for Dull & Mature Skin VALNCIA 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 GHK Cu (75mg) Alpha BioMed Buy GLOW Plus Peptide 99%+ Pure GLOW Plus for Research
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zinc ghk cu Thoughts on the colour of this GHK-CU 50mg (still in powder form) : r/PeptidePathways