Copper Peptide Regenerating Serum for Glowing Skin and Hair 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 GHK Cu is a naturally occurring copper binding peptide that plays a major role in tissue repair and remodeling, with a strong focus in research on skin and hair biology. It works by signaling GHK Cu Scalp Solution Empower Pharmacy