All About GHK Cu Peptide More Than Just Cosmetic Subcutaneous Injection Sites and Instructions for Safe Self Administration 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 GHK CU 100MG MOB Biotech Peptide Injection Sites Full Guide On Where To Inject Peptides