Braun Satin Hair 7 Brush is unique. While others have ions only buried in their material, the Satin Hair 7 brush actively produces them in millions and pushes them out through the little green jets. You can even hear it work with a quiet hiss. All those ions infuse your hair and beat static and frizz for instantly visible shine. And they help transport the moisture of the surrounding air back into the hair. Detachable cushion enables easy cleaning. Simply remove the cushion pad and easily clean it under running water. It keeps your brush in pristine state for years of use. Seamless bristles has no burrs or sharp edges. Seamless bristles make for a wonderfully gentle and damage-free glide through hair.