Certified B CorporationNot Tested on AnimalsDoing Good Everyday Since 1970NaturalThe OriginalFluoride-Free Clinically Proven Rapid Relief†Long Lasting* ProtectionHalalKosherSustainable Business Practices Cruelty Free  Micro openings at the tooth surface are pathways to sensitive nerves.  Arginine & Calcium Carbonate formula seals pathways to help seal-out pain.  Unlike some sensitive toothpastes which just numb the pain, our formula with the amino acid Arginine & 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. At tom's of maine, we don't just say good, we do good. our story starts in 1970 when tom and kate had a vision about companies taking action and doing real good: good for you, our planet and our communities. fifty products, years later we're doing even more. we make wonderfully-natural give back 10% of our profits, and work for real change... like developing the first of its kind recyclable tube *Lasting sensitivity relief based on continuous use. †For rapid relief, apply the product directly to the sensitive tooth with fingertip and gently massage for 1 minute.