GHK Cu: The Regenerative Peptide for Skin, Hair, and Healing Pulse & Remedy 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, Glow Peptide Injection: Revolutionizing Skin Rejuvenation Hubmed Glow Peptide Protocol GHK Cu, BPC 157, TB 500 Neurogan Health