We were skeptical when the Clarisonic first came out: a vibrating brush for your face? But this is one high-tech skin-care gadget that’s actually worth the splurge. In honor of Fashion Week, the brand is introducing this miniature Mia version with a New York skyline design. The brush vibrates at a high frequency for 60 seconds, sudsing away built-up grime and oil; it removes makeup six times better than hand-washing, warding off morning breakouts. The exfoliating bristles are gentler than harsh facial scrubs, leaving skin feeling soft and smooth without rubbing it raw. And the cell-phone-sized gadget is small enough to throw in your gym bag or carry-on. Though it's an investment, it's well designed: It lasts over a month with twice-a-day use before it needing recharging and the brushes hold up over time.