GHK and AHK copper peptide topical serum tutorial This gives a roughly 3% concentration of both peptides. Great for any hair + skin protocol Comment and let me know if you AHK CU Peptide for Hair Growth Plu Labs Discovery Size (10 ml) 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 GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? Buy AHK Cu AHK Cu: what kind of peptide it is, properties, features, and use in cosmetics