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 ONDA Cycle Allows You To Control Three Wheels – Spin Until You Puke! Place Your iPhone Inside the Lumenati CS1 Smartcase, and It Becomes a Vintage Cinema Camera The Throwable Ball Camera Solar Cat Toy Will Make Your Cat Play Until It Stops Breathing Zanier Heat-GX Gore-Tex Liquid Nanotech Vests To Protect Against Bullets