Everyone's talking about GHK Cu right now but no one's really explaining it It's a peptide your body already makes and it plays a role in things like skin health, repair, and GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK Cu 50mg 5 Vials Us Chem Labs Topical or SubQ GHK Cu? Same molecule. Very different purposes. Topical you apply it on your skin. Think of it as feeding your skin from the outside. In a 12 week study of