Why is CrossAction right for you?: It is to remove more plaque than a regular manual brush. It removes up to 90% of hard to reach plaque.** How does it work?: Unique CrissCross bristles are angled in opposing directions to lift out and sweep away plaque; Extra long Power Tip bristles help clean hard to reach places; Blue indicator bristles fade halfway so you know when to replace your brush. The brand more dentists use themselves worldwide. **One time brushing studies.Other products from HerbsPro