Copper Peptide Hair Growth Serum 10% GHK Cu & 5% AHK Cu Hairgenetix Copper Peptides For Hair Growth in 2026? Watch This First! YouTube 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 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