GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B 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 A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B