If you're not using GHK Cu what are you waiting for?! These photos still blow my mind Same person. Different chapters. GHK Cu (Copper Peptide) is one of the most researched peptides when it Copper Peptides Serum for Face 2% GHK CU & 4% EGF Seraphime Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference The Peptide Craze Ground Truths