GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution Wellness peptide craze: why people are injecting drugs 'not for human consumption' GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B 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