GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? Repost from @drkimspago Wait Copper Uglies made you quit your copper peptides?! Before you toss itlet's talk about what's actually happening. Most of the time, it's not the GHK Cu (copper GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Two Weeks on GHK CU by Rory Uphold The Ladies Room GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes