GHK Cu Copper Peptide Serum with Niacinamide, Hyaluronic Acid and Mushroom Extract 1% Copper Tripeptide 1 Anti Aging Formula, 1 oz GHK Cu is one of my personal favorites for a lot of reasons, but I can say without a doubt that it's use effectively stopped and reversed, my receiving hairline. However, there are Efficacy Copper Peptide.pdf GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu Peptide Therapy Brea, CA Orange County