Glutathione and Vitamin C: Better Together? Performance Lab Vitamin C vs Glutathione whats the difference? Both brighten the look of skin but they work in different ways. Vitamin C helps visibly brighten and improve the appearance of sun damage while Codeage Liposomal Vitamin C+ Platinum, L glutathione, NAC, CoQ10, Flavonoids Vitamin C for Healing IV Elements Glutathione vs Vitamin C: Which is Best for Your Health?