Intense Copper Binding GHK Cu 5% + Tetrapeptide 7 5% Cellular Repair S Chebo Clinic Copper Peptide Serum for Hair Regrowth & Thinning Hair Feline Skinscience GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml) Good skin starts with the right ingredients. We made the GHK Cu Peptide Serum for people who want real results without the clinical experience. Copper peptides, hyaluronic acid, niacinamide and more, in one