A tool for recommending proper sun block use. The tool receives, by one or more computer processors, a first image of a user captured by a camera, and a second image of a user captured by a camera, wherein the first image is an ultraviolet image, and the second image is a digital color image. The tool determines, by one or more computer processors, areas of ultraviolet radiation vulnerability for the user captured in the first and second image. The tool determines, by one or more computer processors, a level of ultraviolet radiation vulnerability for the determined areas. The tool determines, by one or more computer processors, a recommendation for proper sun block use based, at least in part, on the level of ultraviolet radiation vulnerability.