What volume of sterile, bacteriostatic water should be used to reconstitute a 50mg vial of GHK Cu (Glycyl Histidyl Lysine Copper) peptide for cosmetic or dermatological use? Injectable GHK Cu: Beginner's Guide to Copper Peptide GHK Cu 100mg Peptide Bank If you've ever felt lost trying to reconstitute GHK Cu, this one's for you. I walk you through how I prep it step by step, including transferring it to a larger vial., Think of this as a lab day at GHK Cu Youthful Skin, Healthy Cells, Vibrant You.