GHK CU vial dosage question : r PeptidePathways GHK Cu, commonly known as copper peptides, are found naturally within the human body where they play a vital role in skin repair and maintenance. Copper peptides support optimal skin function by helping GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B