GHK Cu: A Peptide for Skin, Hair, and Healthy Aging Nick Sukay posted on the topic LinkedIn GHK Cu Copper Peptide: The Ultimate Peptide For Longevity GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true?, Copper peptide, known as GHK Cu, has a growing body of peer GHK Cu Peptide Therapy as the perfect skin and hair rejuvenation tool. Simply combining GHK Cu peptide with your favourite cream or serum creates a blend suitable for application to your face, neck