Although nothing can prevent the natural aging process of our skin, there are some ways to prevent signs of premature aging.
Believe it or not sleeping on your back can help!
"Resting your face on the pillow in the same way every night for years on end leads to wrinkles. Called sleep lines, these wrinkles eventually become etched on the surface of the skin and no longer disappear when the head is not resting on the pillow.
Women, who tend to sleep on their sides, are most likely to see these lines appear on their chin and cheeks. Men tend to notice these lines on the forehead since they usually sleep with the face pressed face down on the pillow. People who sleep on their backs do not develop these wrinkles since their skin does not lie crumpled against the pillow."(found at skincarephysicians.com)