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 Understanding Copper Peptides in Beard Oil MAYRAKI My 90 Day Beard Growth Protocol Using Minoxidil and GHK Cu Peptides (With Progress Pics) : r BioHackingGuide I posted about GHK CU about two weeks ago and had a ton of people ask me questions about it in terms of how it works, but also asking about my personal experience. I am not done treatment yet, but in