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, Dimeric copper peptide incorporated hydrogel for promoting diabetic wound healing Nature Communications The Human Tripeptide GHKCu in Prevention of Oxidative Stress and Degenerative Conditions of Aging: Implications for Cognitive Health Pickart 2012 Oxidative Medicine and Cellular Longevity Wiley Online Library WO2019167070A1 Topical copper tripeptide composition and process of preparation. Google Patents The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline The Benefits & Risks of GHK Cu (WATCH BEFORE TAKING)