GHK Cu is the compound your body made at 25 and quietly stopped making. Most people find it in overpriced serums. Few understand what it actually does, or what happens when you're not PSA] Finally, a Dr. explains the mechanism behind the "copper uglies" : r SkincareAddiction How is the GHK CU Peptide Used in Skin Rejuvenation and Anti Aging? Concierge MD LA Ghk Cu Peptide Injection IV Vitamin Therapy