AHK Cu Copper Peptide Hair Tonic for Fuller Looking Hair Discovery Size (10 mL) AHK Cu Copper Peptide Hair Spray 4,800mg for Hair Growth AHK CU.com Copper Peptide Set: Shampoo, Conditioner & Serum Bundle Hairgenetix AHK Cu vs GHK Cu : Benefits and Applications 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 Copper (1%) Copper Tripeptide Serum with Hyaluronic Acid (1.5%) Face and Scalp Serum FOUNTAIN