New Sensodyne Rapid Action provides clinically proven relief from sensitive teeth in just 60 seconds. It relieves tooth pain when directly applying a pea-sized amount to a clean finger-tip and rub gently into each sensitive area (max twice per day) for 1 minute before brushing. That's because it is formulated to quickly create a barrier over sensitive areas of your teeth. When used twice daily, it provides long-lasting protection from sensitivity with twice daily brushing.