Valeant Pharmaceuticals has entered into a definitive agreement to acquire all of the outstanding common stock of skin aesthetics device maker Solta Medical, Inc for approximately $250 million. The deal is expected to close in the first quarter of 2014. Solta designs, develops, manufactures, and markets energy-based medical device systems for aesthetic applications.  Solta's products include the Thermage CPT system that provides non-invasive treatment options using radiofrequency energy fo...