Besides being the ultimate immune-booster, vitamin C is also a powerful wrinkle-fighting antioxidant. Hang on, it gets better! Before you reach for that carton of OJ, dig this: You can find C in a whole bunch of foods you might never suspect, such as strawberries, papaya, kale, peppers and those leafy little bundles, Brussels sprouts.

MORE: 10 Surprising Sources of C