Frontiers A Balanced Act: The Effects of GHGHRIGF1 Axis on Mitochondrial Function GHK Cu is everywhere right now. Hair growth, skin repair, inject this and look 25 again. You can inject GHK for years, but if the body receiving the signal isn't set up to IGF 1 promotes the development and cytotoxic activity of human NK cells Nature Communications Everyone's calling GHK Cu a miracle peptide But let's separate marketing from mechanism. GHK Cu isn't magic. It's a signal. A signal that: Supports tissue repair Modulates inflammation Enhances collagen + Is Growth Hormone Resistance IGF 1 Reduction Good for You?: Cell Metabolism