Most people think GHK Cu works because it's a skin peptide. That's surface level thinking. #GHK Cu doesn't start with wrinkles, scars, or hairlines. It starts with cellular repair signalling. GHK Cu is a copper peptide Copper Peptide Serum Capsules ComplexCity Aesthetics GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution BLUE Copper Peptide GHK CU Serum with Hyaluronic Acid Anti Wrinkle Assortment eBay