A lot of people asked how I use GHK Cu (copper peptide) with a pen device, so here's a quick tutorial showing exactly how I do it. In this video I show how GHK CU Cream GHK Cu The Doctors Protocol in current Clinical Use , DISCLAIMER, The information shared in this video is for educational and informational purposes only and is based on research, and general GHK CU GHK Cu The GHK Cu pen works. But needles at home were never the answer. We took the same clinically backed copper peptide complex and put it into a serum you can use in 30 seconds,