Eating an orange a day may keep fine lines and flaky skin under control.  Noted in the American Journal of Clinical Nutrition, researchers found that women, age 40 or older, who had greater amounts of Vitamin C were about 10% less likely to develop wrinkles.  Vitamin C was found to boost collagen production, which helps keep skin firm.  Research has found that by consuming the RDA of 75 mg of Vitamin C, reduces wrinkles.  You can accomplish this by taking supplements, eating oranges, grapefruits, or other fruit of your choice containing Vitamin C.