Tackle plaque head on with these deep-clean Philips Sonicare toothbrush heads designed to let you quickly enjoy whiter, brighter teeth while experiencing an exceptional everyday clean. The C3 Two-in-one's soft-touch head enhances the bristle motion to comfortably reach more areas and remove up to 10x more plaque than a manual toothbrush. These electric toothbrush replacement heads use a cluster of dense bristles at their center to achieve up to 1000% more stain removal in 3 days². Trust proven Sonicare technology: the Philips Sonicare toothbrushes clean gently yet effectively and care for your teeth and gums with up to 62,000 bristle movements. Sonicare Fluid Action supports cleaning by driving fluid deep between teeth and along the gumline. All Philips Sonicare sonic toothbrush heads are meticulously designed and clinically tested to meet the highest standard in quality, safety and performance. They are compatible with all Philips Sonicare click-on electric toothbrushes?. Dental professionals recommend changing your brush head every 3 months, that's why Philips Sonicare toothbrushes have BrushSync technology. It tracks how often and how hard you brush, and the light on the handle turns on when it's time to replace your brush head.? You will also know when to replace it when blue bristles turn white. ¹ vs. a manual toothbrush ² after 3 days in White + mode vs. a manual toothbrush ³ allocated to plastic of brush head on mass balance basis ? where facilities exist ? not compatible with Philips One and e-series handles ? in hard-to-reach areas ? the feature is available for BrushSync-compatible handles