Advanced GHK Cu Face Cream 2400mg 4% Firmer Skin Neurogan Neurogan Health 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 a growing body of peer Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Jumbo Size Cellular Glow Copper Peptide GHK Cu Serum for Face GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration