Abstract: The present invention features an ultraviolet indicating closure comprising (a) a primary support body; (b) means for fitting the primary support body and the closure onto a container, wherein the container comprises a specific, pre-identified ultraviolet radiation protecting product; (c) at least one ambient surface located on the primary support body, wherein the ambient surface is exposed, at least in part, to ambient conditions and ultraviolet radiation; and (d) an ultraviolet radiation indicator integrally formed within at least a portion of the ambient surface and comprising a first, base color, the ultraviolet radiation indicator comprising a photo-chromic makeup that induces a single color change within the ultraviolet radiation indicator to a second, indicating color based upon breach of a pre-determined, incorporated ultraviolet radiation intensity threshold by the ultraviolet radiation incident upon the ambient surface, the single color change and the second, indicating color corresponding to and s