GHK Copper Peptide GHK Cu Tripeptide 1 Copper Peptide Powder Diy Etsy 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 help support GHK CU: Promote Hair Growth & Thicker Follicles Evolve GHK Cu Copper Peptide Neck & Face Serum Topical or SubQ GHK Cu? Same molecule. Very different purposes. Topical you apply it on your skin. Think of it as feeding your skin from the outside. In a 12 week study of