InfiniWell, GHK CU, 30 ml This is a product I purchased on Amazon, so I want to give it a quick review. *~Dumie GHK CU Facial Serum~* This is a Copper Peptide serum that is working amazingly for GHK Copper Peptide GHK Cu Tripeptide 1 How to Layer Haloxyl and GHK Cu for Tired Eyes 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