It may look like nail art, but the L’Oreal UV Sense, shown off at CES 2018, is a little UV sensor. It works with an app on iOS and Android, automatically syncing with the sensor. Try leaving it on your sunglasses, shoes or other places to detect UV rays. Plus, it’s battery-free!
L’Oreal’s tiny wearable at CES 2018 helps you protect your skin: https://www.cnet.com/news/loreal-uv-sense-ces-2018/
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