Works hervorrragend. I want to specifically address one thing that is mentioned or criticized in some reviews. It's about the temperature control and the fact that the brush "cold" does not rotate on the position. This is - unlike some opinions - very useful. Is it at the hairdresser, then you learn that after styling with rotation and heat with the shape of the hair at rest (!) And is fixed at cold temperature.
One star deduction because of some poor ergonomics of the sliding switch. Depending on where the brush is (eg. At the back), the relative stiffness or lack of precision of the switch makes a negative impact. Not very bad, but not perfect.