The Philips Sonicare DiamondClean brush head gently lifts away stains to whiten teeth. Designed to work with all click on Sonicare models, these replacement brush heads feature highly effective diamond shaped bristles to whiten teeth in just 1 week and gently remove 7x more plaque than a manual toothbrush. Use with a Philips Sonicare BrushSync(TM) compatible handle (DiamondClean Smart or ProtectiveClean) to unlock Smart features: BrushSync mode pairing triggers your handle to select optimal mode and intensity level for exceptional plaque removal (certain models only); BrushSync replacement technology tracks how often and how hard you brush and will notify you when it is time to replace your brush head. For best results, use genuine Sonicare Brush Heads with your Sonicare toothbrushes. They are designed to work together to provide optimal performance. No other replacement brush head claiming to fit Sonicare handles is clinically tested & proven to remove up to 100 percent more stains in 7 days than a manual toothbrush or to be safe and effective on your Philips Sonicare Toothbrush. Essential Oil Warning: Toothpaste containing essential oils can damage your brush head. Avoid direct contact with products that contain essential oils or coconut oil. Use may result in bristle tufts dislodging. Reminder bristles fade to let you know when it's time for replacement. Replace your brush head every 3 months as recommended by the American Dental Association. A fresh brush head every 3 months maximizes the effectiveness of Philips? unique Sonicare technology.