The original Mederma scar gel is not intended for use on stretch marks. However, Mederma does offer a product formulated specifically for the treatment of stretch marks: Mederma Stretch Mark Therapy.
Mederma Stretch Mark Therapy is effective both in reducing the appearance of existing stretch marks and in preventing the formation of new stretch marks. According to the manufacturer, 76 percent of women who used the product as directed for 12 weeks were happy with the reduced appearance of their stretch marks. Mederma Stretch Mark Therapy is clinically proven to increase the skin's moisture content, improving elasticity and preventing the tears that cause stretch marks.