GHK Cu Topical vs Injection Which is the Better Copper Peptide Form? How I Grew My Beard Within 3 Months and Maintaining It (MUST READ) : r Minoxbeards 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 GHK CU Copper Peptides for Hair Growth Benefits