GHK Cu and Reproductive Health: Mechanisms, Fertility Benefits Copper Peptides: Benefits for Skin and Hair Care, and How to Use Them The GHK Cu pen works. But needles at home were never the answer. We took the same clinically backed copper peptide complex and put it into a serum you can use in 30 seconds, 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 GHK Cu: The Regenerative Peptide for Skin, Hair, and Healing Pulse & Remedy PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction