Photo: Courtesy of Palomar Medical Technologies

Laser company Palomar has translated a fractional laser—a favorite skin-renewing machine in dermatologists' offices—into an at-home device smaller than a hairbrush. While the pros' versions treat 10 to 30 percent of the skin's surface in one pass, PaloVia ($499; PaloVia.com) targets about 1 percent at a time, and treats only lines around the eyes. To get results, you must use it daily for a month, and then twice weekly, indefinitely. In a study published this year, 90 percent of subjects saw a reduction of their crow's-feet by at least one grade on a nine-point scale after using PaloVia for 30 days. Not a revolutionary difference yet—but a glimpse into the future of skincare: high-tech results from do-it-yourself devices.