Copper Peptide Regenerating Serum for Glowing Skin and Hair I've been getting a lot of questions about GHK Cu, so here's a quick breakdown. GHK Cu is a copper peptide that naturally occurs in the body and plays a role in skin repair GHK Cu copper peptides calm, repair, strengthen If your skin often feels: red or reactive irritated even from gentle skincare tight, dehydrated or burning tired and sensitive GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B