More eyelash-growth products are being introduced by prescription and at the beauty counter. Sales are keeping pace. Brooke Shields beams into the camera, her sea-green eyes framed by long, dark lashes, doing the cha-cha and helping a friend blow out birthday candles. In the ubiquitous commercials for the lash-growing product Latisse, the actress and model is saying what everyone wants to hear: have long, fluttering lashes, and your life can be gorgeous too.