Why choose Sensodyne Rapid Relief? Sensodyne Rapid Relief Extra Fresh Fluoride Toothpaste is clinically proven to provide fast relief from sensitivity pain - and to help stop it coming back. Its unique formula using stannous fluoride starts working on sensitive teeth from the first brush, delivering clinically proven relief from tooth sensitivity pain in just 60 seconds. This unique formulation creates a barrier over sensitive areas of your teeth and builds ongoing protection with twice-daily brushing. What's more, Sensodyne Rapid Relief also helps to whiten your tooth enamel and prevent surface staining, and leaves your mouth feeling clean and fresh.