This smart brush tells you if your hair is healthy The Kérastase Hair Coach is a hairbrush that connects to an app on your phone. Facebook Prev Article Next Article Gadgets Checkout these cool gadgets... Related Posts With This Device You Can Turn Anything On and Off Remotely Microsoft’s HoloLens AR Lets You Virtually Blast Robots and Spaceships in Your Living Room Beer Cooler Acts As a Photo Blocker – No More Unwanted Facebook Tags Turn your Bike into a Moped – RevoPower Parrot Disco Drone at CES 2016 is a Massive Wing Drone Animated Desktop Globe Let’s You See Earth Like an Astronaut