Are Glutathione Injections Effective for Hyperpigmentation? The Connection Between Liver Health & Skin Glow Glutathione: What It Glutathione and Why Does It Matter What is glutathione? Know as the most important antioxidant in the body, glutathione is an essential antioxidant manufactured in all cells, but primarily in the liver. It is essential because it Your liver works every single hour of every single day, filtering toxins, metabolizing hormones, processing everything you eat and breathe. And to do all of it? It needs glutathione. Your liver uses