Skin Patch Might Tell if You’ve Been in the Sun Too Long

Scientists from Northwestern University report that individuals may soon be able to wear a small battery-free patch that can alert them when they are approaching an unsafe level of ultraviolet (UV) ray exposure. Researcher Dr. Steve (Shuai) Xu notes, “In the [United States], we’re in a skin cancer epidemic, which is driven by excessive UV exposure… Thus, this technology would be useful for the majority of individuals by empowering them to know how much UV they are actually getting.” Science Translational Medicine, December 2018