Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline 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, WO2019167070A1 Topical copper tripeptide composition and process of preparation. Google Patents Subcutaneous Injection: What It Is and How to Give One The tripeptide GHKCu complex ameliorates lipopolysaccharideinduced acute lung injury in mice Oncotarget