Garlic: An Exploration of Allicin, Nutrition Therapy Institute Glutathione is a powerful antioxidant made by the body that helps protect cells, support detoxification, and promote healthy, glowing skin. These foods naturally help boost and protect glutathione levels supporting skin health Did you know? Garlic is high in sulfur compounds that help increase levels of glutathione. This antioxidant is part of your body's first line of defense against stress. For more details, visit Foods High In Glutathione