Peptide Therapy in Brandon & Lakeland, FL BPC 157, TB 500 & GHK Cu What are the considerations and potential benefits of using GHK Cu (Glycyl Histidyl Lysine Copper) in a generally healthy adult female for skin health and hair growth? 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, GHK Cu 50mg Particle Peptides