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 Page 1 Reviews Neurogan Health, Copper Peptide GHK CU, 120 mcg, 60 Tablets iHerb 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK Peptide Sciences GHK Cu 50mg Copper Egypt Vitamins