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The Kerastase Hair Coach Powered by Withings is, you guessed it, a smart hair brush.
It has a built-in microphone that listens as you brush your hair.
It can also tell how forecefully you're brushing.
It knows whether or not your hair is wet.
From there, it gives you a score on your hair health and recommends Kerastase products that could help improve your locks. Read more at the link below, and check out everything else at CES 2017 here.