Contains fluoride for cavity prevention and calcium for clean teeth. Fluoride helps prevent cavities Fluoride helps remineralize soft spots on teeth before they turn into full - fledged cavities and strengthens the tooth structure so enamel becomes more resistant to decay. Uses: Aids in the prevention of dental cavities. Dear friends When we founded Tom"s of Maine in 1970, we based it on the idea that nature has answers to our everyday needs. What makes our products so effective? We use natural ingredients in innovative ways without adding any artificial flavors, fragrances, colors, or preservatives. Our toothpaste, mouthwash, soap, and deodorant products have proven our original belief: ingredients from nature really work. Please let us know what you think!