GHK Cu Peptide Benefits for Skin and Hair LIVV Natural 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 Ghk Cu Intra Nasal Spray 50 mg 0.34 oz. Westend Medical Supply GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B How long will a 50 mg supply of GHKCu last when dosing 2 mg daily for five consecutive days followed by two days off each week?