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 Mixing a little magic potion for hair, scalp & skin Formulating a custom mist & face cream infused with topical GHK CU + AHK CU copper peptides. These copper peptides are known to Copper Peptide AHK Cu Scalp Serum IWG 1% AHK Cu Treatment Spray