Ghk Cu Shampoo Copper Peptide Hair Growth Best Peptide for Hair Growth Copper Peptide Shampoo Skinworks 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 Copper Peptide Serum for Hair Regrowth & Thinning Hair Feline Skinscience Cellular Glow Hair Serum 10% GHK Cu + 5% AHK Cu Peptides GHK Cu Hair Growth Serum Proven Copper Peptide, $299