Having a bad skin day? Yup, it hurts--follow all the beauty rules (like washing off makeup before crashing and avoiding the sun) but you still wake up with a less-than-stellar complexion. Here are seven little habits that could be coming between you and a great reflection.(COSMO BEAUTY BOOK)

1 The surprising saboteurs;

Your BlackBerry, Sidekick, or cell phone

Why they're bad for your skin:

You may have thought the only drawback to your wireless gossip sessions was the bill. But a new study by Howard Murad, MD, associate clinical professor of dermatology at UCLA, found that having fewer face-to-face conversations with your friends, combined with the pressure to keep up with the increasingly fast pace of life, can cause what he calls cultural stress. And as you may know, stress is often responsible for many physical annoyances, like excess oil production, reduced circulation, and water loss in your skin-cell walls, all of which can lead to breakouts, dullness, and dehydration, says Dr. Murad.

What you can do: Ward off stress by carving out at least two hours once a week to bond with your buds in person, says Dr. Murad. Also, in addition to a stellar skin-care routine, Dr. Murad recommends eating lots of fruits, veggies, and fish. These foods possess anti-inflammatory properties, which help to keep your complexion under control, even when your life isn't.

2 The surprising saboteurs:

The windows in your workplace or car