Don’t eat white sugar…

“The number-one ingredient that I avoid in my diet is processed sugar. The reason: It speeds up the aging process by binding to and eventually weakening the collagen in your skin, which can lead to premature wrinkles and sagging. I eat lots of vegetables and fruits every day—and I steer clear of Twinkies at all costs!”—Ava Shamban, MD, dermatologist and owner of the Laser Institute for Dermatology and Skin care, Santa Monica, Calif.
…Scrub with it instead
“In the shower, I lather my hands with a mild cleanser, add a handful of white sugar, and slather it all over my face and body. It makes my skin so smooth and creates a great canvas for makeup.”—Carmindy, celebrity makeup artist
 
Read more at http://www.health.com/health/gallery/0,,20306759,00.html