AHK Cu vs GHK Cu : Benefits and Applications The new Copper peptide AHK Cu, and why the data shows it could be one of the most beneficial and relevant peptides for both men and women dealing with hair thinning and shedding, It sits in the 7% AHK Cu Copper Tri Peptide Liquid Anti Aging Bulk Naturals R 10% Ghk Cu + 5% Ahk Cu Copper Peptide Hair Density Serum GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? AHK CU Copper Peptide Powder, 99% min, CAS 682809 81 0, 1 gram