Tom's of Maine rapid relief sensitive toothpaste is clinically proven to provide rapid relief and long-lasting protection from sensitive tooth pain. Unlike some sensitive toothpastes which just numb the pain, our formula with the amino acid arginine and calcium carbonate quickly seals the pathways that lead to sensitive tooth nerves providing rapid relief. With regular use, it builds a long-lasting protective barrier that acts like a seal against sensitivity. Safety Warning Sensitive teeth may indicate a serious problem that may need prompt care by a dentist. Stop use and ask a dentist if the problem persists or worsens. If pain/sensitivity still persists after 4 weeks of use, please visit your dentist. Keep out of reach of children. If more than used for brushing is accidentally swallowed, get medical help or contact a Poison Control Center right away. Directions Adults over 21 years of age: For daily sensitivity prevention and lasting relief, apply a strip of product to cover head of soft bristled toothbrush. Brush thoroughly for one minute twice daily especially at the gum lines where most tooth sensitivity occurs, or as recommended by a dental professional.