Oh hey, they have smart hairbrushes now
 

L'Oreal has been gently getting into the technology game, first by partnering with Dr. John Rogers on a skin damage-tracking tattoo. Now, the cosmetics giant has hooked up with Withings to develop a smart hairbrush that's designed to keep your scalp...

https://www.engadget.com/2017/01/03/...art-hairbrush/