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Buffing away dark spots sounds like the stuff of dreams (our dreams, at least), but the PMD Personal Microderm comes ridiculously close to making that a reality. The exfoliator looks a lot like a buzzing electric toothbrush, only instead of bristles, it's got a crystal disk. Or rather, as many as 14 disks, for use on the face and body. (They come in several grits, but do yourself a favor and stick with the gentlest two for the face: The coarsest irritated our tester's skin.) After using the PMD twice a week for three months, our tester noted that his dark spots left over from acne were nearly gone and his skin was brighter overall. "It's as close to a professional microdermabrasion treatment as you can get at home, and it even vacuums up dead skin cells just like a professional tool," says Jeannette Graf, a dermatologist in Great Neck, New York. "It'll help fade sun spots and get rid of dead skin—which accentuates pores and wrinkles—more efficiently than scrubs or cleansing brushes."

Pretty much every woman over 18 has got it, but there's no permanent fix for cellulite. "Even in-office treatments like lasers don't get rid of cellulite altogether because it's so deep under the skin," says Graf. "The easiest short-term fix is a powerful massage to push fluid out of lymph nodes, making ripples less obvious temporarily." Since a weekly deep-tissue massage isn't in the cards, we put the Riiviva—a tool that sucks at skin—to the test on just one thigh. The first five-minute treatment didn't make a difference that day, but (surprisingly) our skin was smoother the next morning. Two more five-minute sessions and our dimpling was significantly less noticeable—even our boyfriend commented. We're not totally sure how we feel about that, but we were thrilled nonetheless with the improvement, which lasted for just under a week. (They also sell an exfoliating head, but it didn't seem to add anything, so we'd skip it.)

Unlike other at-home anti-aging lasers (which tend to be for skin around the eyes or lips), the Tria Age-Defying Laser works on the entire face. "It uses the same wave-length as some professional lasers, but at energy levels that can't damage skin," says Roy Geronemus, a dermatologist in New York City. That means the Tria takes longer to yield results. In clinical studies, subjects used it five days a week for three months. "Three months later, about 75 percent had a statistically significant improvement in wrinkles and brown spots," says Brian Biesman, an oculoplastic surgeon in Nashville who conducted some of the trials. Our tester was impressed, though she wouldn't call this an easy fix: After three months of three five-minute skin-stinging sessions a week, her lines had diminished enough to make her look years younger. Her skin felt sunburned for about an hour after each use, but the laser didn't actually make her sensitive skin look red.

Light-therapy devices use LEDs, very specific wave-lengths of light, and "most claim to treat acne with blue LEDs or wrinkles with red ones," says Howard Sobel, a dermatologist in New York City. Dermatologists have used blue lights to kill acne-causing bacteria for years, "but even medical-grade red lights may not drastically improve wrinkles; they're best for calming inflammation." That's why we like the Baby Quasar Clear Rayz: "The red and blue lights will heal breakouts in a few days, calm redness in the meantime, and prevent acne from leaving dark spots behind," says Fredric Brandt, a dermatologist in New York City and Miami. Just three sessions cleared up our tester's painful hormonal breakouts. And after a few weeks of use, her skin remained even. But then reality set in: With each session taking her at least ten minutes, she cut back to once a week. Now she uses it to shrink new zits, instead of more often to prevent them.