GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration Grass Fed Beef Tallow & Copper GHKCU Peptide Soap Bar with Coconut Oil Shea Butter for Ever heard of GHK Cu peptide? It's a naturally occurring copper peptide that helps repair tissue, stimulate collagen, and support skin healing. When used in injectable form, it works at a deeper level GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B