GHK Cu Peptide: What It Does for Body Composition and Metabolic Health 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 Peptide Regenerating Serum for Glowing Skin and Hair Copper Peptide (GHK Cu) 2% Recovery Serum 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK Ghk Cu Experienxe : r Peptides