Skin Restoration: Prioritizing Safety Over Trends 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 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Seraphime GHK Cu Peptide Serum 30 ml, Copper Peptide Serum with Hyaluronic Acid for Tightening, Collagen Boosting