LONG BEACH, Calif.--(BUSINESS WIRE)--Obagi Medical Products, Inc. (NASDAQ: OMPI), a leader in topical aesthetic and therapeutic skin health systems, today reported net income for the fourth quarter ended December 31, 2011 of $5.1 million, or $0.27 per diluted share, up significantly compared with $2.9 million, or $0.14 per diluted share a year earlier.