LONG BEACH, Calif.—Obagi Medical introduced OBAGI-C™ Rx System Normal to Oily Skin, a complete skincare program that proactively corrects early signs of damage to help restore and maintain skin. It combines vitamin C with a patented formula of 4 percent pregascription-strength hydroquinone. According to the company, the combination reduces the appearance of freckles and age spots caused by sun damage, regulates the production of melanin-producing cells, resulting in even skin tone, enhances collagen production, minimizes skin cell damage caused by environmental factors and improve dark patches caused by photodamage.