The "stars without makeup" gotcha issue of our favorite weeklies always go directly into the recycling bin, in large part because it's simply not that shocking to take a day off from makeup. But is it necessary? Recently, reality star and designer Kimora Lee Simmons told the Miami Herald that she gives her skin "a day off" when she's doing off-camera work or is busy at home with her kids. "No heavy makeup, just some lip gloss maybe a light eye, that's it," she said. We asked the experts whether skin needs to go makeup-free.