This device will tell you just how bad your hair is
 

If you've ever wanted a more precise analysis of your hair, if you want to add a little tech to your hair care routine, or if you just don't trust your hairstylist, Schwarzkopf has you covered. Henkel Beauty Care and its Schwarzkopf Professional bran...

https://www.engadget.com/2018/01/03/...-your-hair-is/