Copper Peptide Hair Growth Serum AHK Cu & GHK Cu + Licorice Peptide Labz Copper Peptide Hair Growth Serum 10% GHK Cu & 5% AHK Cu Hairgenetix Alopecia Treatment Copper Peptide Conditioner Ghk Cu Conditioner 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 Hair Growth Serum Intense with Copper Peptide GHK Cu GHK CU Copper Peptides for Hair Growth Benefits