Peptide Injections: What They Are, What They Promise, and the Big Unknowns How to Measure and Inject GHK Cu (Copper Peptide for Skin and Tissue Repair) YouTube Copper Peptide Regenerating Serum for Glowing Skin and Hair 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 You started using a GHK Cu peptide serum on your face and now , The things no one tells you., Yes, the injections can hurt like a bitch. , Heres the thing Ive found it works even better topically,