The 7 Biggest Beauty Sins

Fess up: You may have seen the inside of a tanning bed at one point in your life and/or popped a zit or two. We're all guilty of committing a beauty sin, but we’ve discovered why those indiscretions may be doing you more harm than you think. Read on to get the full list, some may surprise you.

By Colleen Moody

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Sleeping with Your Makeup On

You went out with the girls, had one too many martinis and before you know it you're face down on your bed passed out cold. You'll wash that smoky eye off tomorrow, right? Not so fast. Aside from the fact that your sheets are about to look like an imprint of the Joker's face in The Dark Knight, you're doing some serious damage to your skin. "If you're acne prone, this is the worst thing you can do to your skin," says Dr. Debra Jailman, M.D., a New York City dermatologist. "Leaving makeup on overnight clogs your pores and traps in dirt from the day. Nighttime is your skin's time to repair itself."

If you know you can be a little lazy at night, make sure to leave some makeup removing wipes by your bedside like POND's Evening Soothe Wet Cleansing Towelettes, $5.69, drugstore.com, to give yourself a quick swipe before shutting your eyes.

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