Copper Peptides Serum for Face 2% GHK CU & 4% EGF Seraphime Copper Peptides Elmhurst IL Chicago Accelerated Aesthetics GHK Cu is one of my personal favorites for a lot of reasons, but I can say without a doubt that it's use effectively stopped and reversed, my receiving hairline. However, there are Copper peptides explained what are the differences between copper peptides and GHK CU peptides? What they actually do for the skin in terms of repair and collagen, and what you can and cant mix The Benefits & Risks of GHK Cu (WATCH BEFORE TAKING)