How to Measure and Inject GHK Cu (Copper Peptide for Skin and Tissue Repair) YouTube 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 6 month GHK CU check in Main takeaway: skin transformation takes time. GHK CU peptide binds to copper and activates genes involved in wound healing, collagen synthesis, and skin remodeling. On the face, this translates Ghk Cu Experienxe : r Peptides