GHK Cu Research Overview Copper Peptide Studies GHK Cu, the copper peptide, is a game changing injectable for radiant skin and so much more Here's what it can do: Boost collagen for smoother, firmer skin Anti aging GHK Cu Peptide Dosage How to Use Copper Peptides, Injections Neurogan Health GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution 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