Neurogan GHK Cu Copper Peptide Neck Face Serum 1200mcg 1oz eBay Skinworks GHK Cu will always be that girl One of my go to favorites right now is GHK Cu. Here's a little about it: GHK Cu is something your body actually produces naturally and GHK Cu Peptide Benefits for Skin and Hair LIVV Natural Scar results don't start at treatment, they start at healing. This client is 20 weeks post op and not yet ready for ISR, so we initiated GHK Cu peptide support to guide the healing