Just because you're out cold doesn't mean your skin is off the clock. In fact, the hours you're sleeping may be the best time to help your skin look its best. While you're snoozing, your skin is at its restorative best! Wake up to gorgeous, glowing skin. "When asleep, your metabolic rate is lower, so you're not producing as many skin-damaging free radicals. Plus, you're not exposed to environmental pollutants or UV light that can harm the skin," explains Mary Lupo, M.D., a new Orleans–based dermatologist. "Because your body doesn't have to work at skin protection overnight, it can instead focus on repairing the damage done throughout the day," she says.

So any products you use will be that much more effective at hydrating, reducing fine lines and wrinkles, and brightening.

Take advantage of the epidermal downtime with these easy tips to make you a sleeping beauty. Your most comfortable sleeping state may not be the best for your beauty. "The single biggest reason for accelerated aging of the skin is sleeping on your face," warns Lupo. "The skin is compressed and doesn't get enough circulation, so it breaks down and creases, forming wrinkles."

And if you sleep face down, fluid pools and causes puffiness. Experts recommend sleeping on your back, with two pillows under your head to keep the blood flow moving. If it's too tough to change your sleep position, consider a silk or satin pillow that won't pull at the skin.