One night of restless sleep is really all it takes for our eyes and skin to reveal our lack of slumber. When we venture into our dark cozy beds at night, our skin is getting ready for some serious repair. It's the only time our skin is shielded from radiation (from the sun and even our computers), stress, and pollution, so it takes full advantage of it! Between midnight and 4 am., our skin cells are in a constant state of repair and regeneration by undoing all the day's damag