Braun Satin Hair 7 IONTEC Brush. Worldâs first brush with active ions. A brush to switch on instant shine. Off, On. Release millions of active ions with the push of a button. Yes, it needs a battery to work. But that is included. Detachable for easy cleaning. Simply remove the cushion pad & easily clean it under running water. It keeps your brush in pristine state for years of use. Seamless bristles. No burrs, no sharp edges. Seamless bristles are made for a wonderfully gentle & damage-free glide through hair. Active ions to go, please. Taking your brush anywhere means taking instant shine anywhere. Be it a great night out or a long day at work, you can touch up with the push of a button & a few strokes. The travel lock protects the ion output nozzles while the IONTEC Brush is in the purse.