GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy Your skin is the largest organ in your body and anti aging is the name of the game! But, GHK cu is treating so much more than just wrinkles, this is for cellular health, 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, Subcutaneous Injection Sites and Instructions for Safe Self Administration