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, What Is GHK Cu? How It Works in Research and Quality Signals GHK CU COPPER PEPTIDES TABLETS The Beauty Doctrine Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum GHK Cu Blue Copper Peptide Ampoule Skin Booster Serum Kit Repair Polypeptide Hyaluronic acid Firming Skin Moisturizing Skin Care AliExpress 66