After a year of using GHK Cu both topically and going deeper than topicals (under my doctor's care), the difference in my skin is not something I have to squint at in good Glow Peptide 70mg Protocol Dosage Ml TikTok Ghk Cu Peptide Administration Guide GHK Cu Copper Peptide Collagen, Skin Rejuvenation & Hair Restoration GHK Cu Dosage And Research Protocol The Peptide Guide 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