L’Oréal recently announced the La Roche-Posay My Skin Track UV, a battery-free wearable electronic that measures UV exposure. The wearable contains a precise sensor that measures individual UV levels, which is then paired with an app to track your exposure to pollution, pollen, and humidity.

“Our research has long indicated the need for better consumer understanding of personal UV exposure,” said Guive Balooch, Global Vice President and Head of L’Oréal’s Technology Incubator. “We created this battery-free sensor to seamlessly integrate into the lives, and daily routines, of those using it. We hope the launch of this problem-solving technology makes it easier for people to make smart, sun-safe choices.”

The device measures both UVA and UVB rays, while providing instant status updates, and up to three months of data can be stored. The battery-free sensor is activated by the sun and powered by the user’s smartphone using near-field communication.

By simply tapping the My Skin Track UV against a smartphone, users receive an automatic update on their app. The app is also integrated with the Apple HealthKit, which helps provide information about humidity, pollen, and pollution levels.

The design for this wearable was made in collaboration with designer Yves Behar, who helped keep it practical and small. The sensor is 12 mm wide and 6 mm high, waterproof, and has a wire clip that attaches to clothing or accessories.

“La Roche-Posay believes that better looking skin starts with healthy habits. That’s why we are committed to bringing scientific progress directly to consumers, so that they can make well-informed decisions that will help them take exceptional care of their skin,” said Laetitia Toupet, Global General Manager of La Roche-Posay. “The research that went into the development of this technology indicated that wearables have the power to inspire true behavioral change by helping people measure and understand their exposure to various environmental aggressors and take action.”