GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes 89030 95 5 GHK Cu Gly His Lys Cu Copper Tripeptide 1; Prezatide copper GHK CU Crescent Chems Research Curious about GHK Cu? This powerful peptide is known for its skin rejuvenating properties and is often called a "youth molecule". GHKCU helps promote collagen production, improve skin elasticity, reduces fine lines and GHK CU Averix Labs