See more What does vitamin C do for your skin? Vitamin C is great for your body, but when you consume it (like through food, drinks and supplements) Paula's Choice 25% Vitamin C + Glutathione Clinical Serum Mistake #2: Only Using Vitamin C Serum Once a Day The skin-care industry is pushing vitamin-C serums as an age-defying moisturizer As we grow older and our skin matures, we might need more hydration than