Not that I need it but a smart hairbrush that’s designed to keep your scalp at its best is on the way. The Kérastase Hair Coach was apparently inspired by people’s tendency to brush hair too forcefully, causing long-term damage. The brush comes packed with tech that includes a microphone that can listen to the sound of your hair to offer insights on frizziness, a gyroscope capable of analyzing your brushing patterns to measure the force that you apply when unknotting your mane, and a conductivity sensor helps determine if your hair is wet or dry. All of this data is pushed to a smartphone app that crunches it alongside the local weather information to give you tips on how to best care for your hair. The cost will be over $100 but under $200. How many can I put you down for?