Botox specialist Allergan plc is acquiring body-contouring product maker Zeltiq Aesthetics Inc. in a deal for about $2.48 billion. Shares of Pleasanton, Calif.-based Zeltiq Aesthetics Inc. (NASDAQ:ZLTQ) were at an all-time high, up 13.2 percent closing at $55.93 on Monday. Zeltiq has developed the Coolsculpting system, an FDA-approved technology that uses a cooling mechanism to reduce the appearance of stubborn fat.