GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has Copper Tripeptide (GHK Cu) for Advanced Skincare & Haircare Formulatio 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Seraphime Skin Perfection GHK Cu Copper Peptide Serum Booster, 1 Percent Blue Liquid For Face, Neck, Body, Hair, And Scalp, 0.5 oz Walmart.com