Mitigating GHK Cu Injection Pain: Tips and Tricks Gabriel Alizaidy, MD, MS posted on the topic LinkedIn 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 Peptide GHK CU Cream Concierge MD