The Sensodyne Ultra Sensitive toothbrush is an EXTRA SOFT toothbrush. This toothbrush features soft rounded bristles which are gentle on sensitive teeth and tender gums. It's slim neck allows for easy access to all areas of the mouth. Specially designed for daily use and for people with sensitive teeth and gums. Its soft silky bristles are specially designed to gently clean teeth. It cleans and stays soft on the teeth. The small brush head is specially designed to reach even the hard to clean areas of the mouth for a thorough, but gentle clean. Dentists recommend replacing your toothbrush every 3 months.