GHK Cu: The Glow Peptide Supporting Skin, Hair, and more AHK Cu (Copper Tripeptide 3) Ingredient Guide Nubeean Noosa Lets talk peptides , Im currently using GHK Cu and if you havent heard of it yet, youre going to want to keep reading., GHK Cu (Copper Peptide) is one of the most researched peptides out 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 Neurogan GHK Cu (Copper Peptide) Neck & Face Serum Global Ubuy GHK Copper Peptide GHK Cu Tripeptide 1