GHK Cu is that feminine peptide every man should still be using if you want to age well. In this video I show the exact math and visuals for the dosage I take from a 50mg per ml vial using a standard GHK Cu Protocols and Dosages The Peptide Report 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 GHK Cu Copper Peptide Cream Product Catalog