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, GHK Cu Blue Copper Peptide Face Cream 4% 2400mg Night Moisturizer Anti Aging eBay Pptido de cobre GHK GHK Cu Tripptido 1 Peptide Storage: Best Practices For Stability And Longevity Bluewell Peptides Amazon.com : GHK Cu Copper Peptide Powder, CAS 49557 75 7, Purity 99+%, 1 Gram : Health & Household What Is GHK Cu? Peptide Research By Bluewell Peptides