GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu and Erectile Dysfunction: What the Evidence Actually Shows 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 What are the benefits, recommended regimen, and safety considerations of topical GHKCu (copper peptide) for skin repair and rejuvenation in healthy adults? GHK Cu Peptide: What It Does for Body Composition and Metabolic Health