Copper Peptide (GHK CU) Serum Australian Private Label Skin Care Cellular Cosmetics GHK Cu 99%+ Pure Peptide Amino Club Amino Club how to do a ghk cu peptide before and after TikTok Shop 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 Taking Zinc While on Ghk TikTok Molecular structure of the tripeptide GHK Cu. In solution lysine Download Scientific Diagram