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 Eleksen’s "Smart-Fabric" Keyboard "Sound-Spotlight" Focuses Sound Like a Light Beam Automatic Soap Dispenser Japanese Designer Creates All-Electric Kaneda Bike (Akira) Called the zecOO Handmade African USB This wall projection makes gym class a giant video game