Copper peptide(GHK Cu) TFA salt 89030 95 5 FC138108 News Role of copper peptide GHK Cu CAS 89030 95 5 in skin care and hair growth Intermediate Cu(II) Thiolate Species in the Reduction of Cu(II)GHK by Glutathione: A Handy Chelate for Biological Cu(II) Reduction Inorganic Chemistry 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 89030 95 5 GHK Cu Gly His Lys Cu Copper Tripeptide 1; Prezatide copper Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms