GHK Cu Peptide: What It Does for Body Composition and Metabolic Health Everyone seems to be talking about GHK Cu right now but most people still don't understand what it actually does. GHK Cu is a naturally occurring copper binding peptide that has been studied for its Copper Peptide Skincare Routine: How to Layer Peptides Glimmer Goddess GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B