GHK Cu Peptide Serum 30 ml, Copper Peptide Serum with Hyaluronic Acid for Tightening, Collagen Boosting GHK Cu Injection AgelessRx Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule 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, Copper Peptide (GHK Cu): Clinical Uses, Stability & Compounding Tips Copper Peptide (GHK Cu) Supplier Cosmetic Ingredient for Formulators Creative Peptides