Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Jumbo Size 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 Copper Peptides Serum for Face 2% GHK CU & 4% EGF Seraphime Theoretical study of copper binding to GHK peptide ScienceDirect 7% GHK CU ACCELERANT Platinum Skin Care