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 Anti Aging Skincare Retinol & GHK Cu Peptide Solutions Beyond Basix Copper Peptides for Skin: What GHK Cu Does and How It Compares to Retinol Copper Peptides for Skin: What GHK Cu Does and How It Compares to Retinol