UNITED KINGDOM: Marie Helvin, the 1980s supermodel, brought London’s Oxford Street to halt on Sept. 15 as she put herself on display in a Selfridges’ window to launch Stop, a new at-home skin care device from Ultragen Ltd. The $700 hand-held device emits four low power beams deep into the dermis which stimulate dermal activity to tighten collagen fibers and increase neo collagen production, resulting in tighter, more supple skin, with significant reduction in the appearance of fine lines and wri...