Allies of Skin Vitamin C Dupe: Reviv C 36% Ingredient Comparison Source Naturals, Reduced Glutathione Complex 50 mg Orange, 100 Tablets Antioxidant Activity with Increased Endogenous Levels of Vitamin C, E and A Following Dietary Supplementation with a Combination of Glutathione and Resveratrol Precursors This is why everyone's obsessed with glutathione Known for its antioxidant properties, glutathione helps support brighter looking skin, protect against daily stressors, and maintain a healthy looking skin barrier. Meet the PURCELL duo