GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect Copper Peptides (GHK Cu) & Beard Growth : r Minoxbeards Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact Struggling with hair thinning or shedding? Meet GHK Cu, the topical peptide everyone is talking about and NO, it's not an injection! This powerful serum helps: Reduce shedding