La Roche-Posay's My Skin Track UV—the first battery-free wearable electronic to measure UV exposure—is available now at apple.com and select US Apple Store locations. According to the company, this marks the first time My Skin Track UV ($59.95), which was developed by L'Oréal’s Technology Incubator and unveiled to acclaim at the 2018 Consumer Electronics Show, will be available to consumers in the US.   With a precise sensor that measures individual UV levels and a companion app that...