GHK Copper (GHKCu) is a naturally occurring tripeptide that acts as a potent signaling molecule for hair regeneration., How it works: GHK Cu enhances hair follicle health by promoting angiogenesis and How I Grew My Beard Within 3 Months and Maintaining It (MUST READ) : r Minoxbeards Understanding Copper Peptides in Beard Oil MAYRAKI Hair Growth Kit for Thinning Hair & Bald Spots Capilia Longa & GHK Cu