Cellular Glow Copper Peptide GHK Cu Serum for Face Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Jumbo Size Does it work? Maneup GHK Cu hair growth serum : r tressless Two Weeks on GHK CU by Rory Uphold The Ladies Room Hair loss drugs: What are the alternatives? Nurtural 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