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From the Botox-addicted Desperate Housewives to the celebs who will try any and every anti-aging treatment (yes, you, Gwyneth Paltrow and Jennifer Aniston), in the past several years many have turned to yoga to for a little help turning back the clock — and we're not just talking the kind that involves downward-facing dog.Face yoga is a series of exercises that promise to do for your face what yoga does for your body: relax and tone muscles. Is one of your eyebrows raised as you read this? That's face yoga. (Kind of.) So, I set out to investigate if making these targeted (not to mention ridiculous) facial expressions can really prevent — and even reverse — wrinkles and sagging.Skip ahead to see the 6 face yoga poses that'll prevent signs of aging. Some plastic surgeons and derms say sorry, face yoga is absolute nonsense. "The earlier youface yoga, the earlier you'll get wrinkles," says cosmetic facial plastic surgeon Jeffrey Spiegel, MD. "You don't get wrinkles from loss of elasticity in your muscles; you get wrinkles in your skin. And repetitive movement creates creases in the skin. It's like folding a piece of paper." Translation? Even if you have the facial muscles of The Incredible Hulk , all that flexing and stretching is also stretching out your skin, ultimatelywrinkles.But proponents of face yoga say that it can relax your face, which ultimately smoothes those tension-filled expressions we make every day without even realizing it. And just relaxing those usually contorted facial muscles can give you aface lift. Who needs Botox to freeze muscles into a smooth, relaxed state when face yoga can do something similar?"Relaxing the facial muscles, especially where we hold tension — like the jaw, brow, and forehead — can counteract the wrinkle-causing grimacing we do on a daily basis," says Annelise Hagen , a New York yoga instructor and author of " The Yoga Face: Eliminate Wrinkles with the Ultimate Natural Facelift .""Since the muscles on our faces can't lift weights or go on the treadmill, when you apply pressure with your fingertips or make certain facial expressions, you're toning and strengthening the muscles," she says. "I would never say face yoga eradicates all lines, but it can definitely change the downward drift."Alright, so the jury's still out on just how effective face yoga is. But I was convinced enough to try it myself. Here are the six face yoga poses that seem to do more good than harm.