Cellular Glow Copper Peptide GHK Cu Serum for Face Multi Peptide + Copper Peptides 1% Serum Copper Tripeptide 1 (GHK Cu): The Premier Anti Aging Ingredient for Skincare Formulators Titan Biotech Ltd. GHK Cu Copper Peptide Hair & Scalp Serum 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