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 copper peptide benefits (GHK Cu) Dr. Harikiran Chekuri GHK Cu and Erectile Dysfunction: What the Evidence Actually Shows GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect GHK Cu Copper Peptide Body Lotion Anti Aging Skin Tightening Anti Wrinkle 10 fl oz Walmart.com GHK Cu Peptide Benefits for Skin and Hair LIVV Natural