CongenPharma Patent: A synthesis method of Tripeptide 1 and Copper Peptide ( GHK Cu) and its application CongenPharma_Providing sustainable and affordable peptides Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms The GHK Cu Peptide: Benefits, Uses, and Why it's Known as the Regenerative Copper Complex 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