GHK CU 50MG Lux synth aminos Small molecules. Powerful results. Experience Peptide Power with Hairgenetix's advanced Copper Peptide Hair Growth Serum, formulated with 10% GHK Cu and 5% AHK Cu to support hair health at the follicle level. Helps Professional Private Label Ghk Cu Copper Peptide Serum for Hair 10% 5% Ahk Cu Serum Hair Growth Treatment Strong Hair Roots Alibaba.com GHK Cu Hair Growth Serum Proven Copper Peptide, $299