Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: What Is GHK Cu? How It Works in Research and Quality Signals The tripeptide GHKCu complex ameliorates lipopolysaccharideinduced acute lung injury in mice Oncotarget GHK cu Copper Peptide: The "Glow" for Hair & Skin Seenergie PH GHK Cu Peptide: Beginner's Guide to Potential Benefits