GHK Cu Copper Peptide in LA 3,356+ Reviews Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms Blog Skincare tips Pure & Cimple Copper, Collagen, and Controversy: Inside the GHK Cu Buzz GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? 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