AHK Cu Proven Copper Peptide Treatment NEOVA 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 Copper Peptide Serum for Hair Regrowth & Thinning Hair Feline Skinscience 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