GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml) GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Unlocking the Secrets of GHK Cu: The Revolutionary Peptide for Youthfu 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 Peptide Benefits and Side Effects: What to Expect from Injections