Protect yourself from damage from the sun with the L’Oreal UV Sense Wearable UV Sensor. Complete with an adhesive backing, this small sensor is extremely powerful. The UV Sense is perfect for placing somewhere like your fingernail. With the replaceable adhesive, you can stick and re-stick as you need. In addition, you can snap it onto your watch or even sunglasses. The UV Sense works tirelessly to keep your skin safe. It syncs with an app on your smartphone to calculate your time in the sun. After asking you a series of questions, the app then measures your time in the send to produce a score. Then, the app also gives you recommendations for products to keep your skin as safe as possible in the sun.