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 Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact 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 Copper Peptides for Skin and Hair Defy Medical Amazon.com: Copper Peptide Shampoo Anti Hair Loss Shampoo Promotes New Hair Growth : Beauty & Personal Care