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 and Reproductive Health: Mechanisms, Fertility Benefits Peptide Injection Site Reactions: What's Normal, What's Not, and What Revolution Health & Wellness Understanding Peptides: BPC 157, GHK Cu & Beyond Meeting Point Health GHK CU is one of the most underrated anti aging peptides and it's been around longer than almost everything else. In my experience, GHK CU isn't just a cosmetic peptide. It improves collagen remodeling, reduces