Guthy-Renker has tapped skateboarder Ryan Sheckler as the newest face of America’s best-selling acne treatment, Proactiv Solution. Known for its wide range of celebrity supporters, Proactiv will feature the pro skater in the brand’s 10th national television program, which will begin airing nationwide this June. “Proactiv started working for me in the first week, now I use Proactiv everyday. When you put it on your face, you can feel it actually getting the dirt out. It feel...