Private Label Ghk Cu Serum Copper Peptide Hair Growth Copper Peptide Serum for Hair Growth Peptide GHK Cu for Hair: Can It Stimulate Follicles & Help Hair Growth? Hair Growth Serum Intense with Copper Peptide GHK Cu Mayraki GHK Cu peptides are used to potentially promote hair growth, increase hair follicle size, and improve scalp health, often for conditions like androgenetic alopecia. As a regenerative peptide, GHK Cu is believed to