Tooth Builder, for sensitive teeth, with 36% natural Xylitol, gets your teeth squeaky clean. Then Tooth Builder’s Mouth Friendly nanosized calcite crystals migrate into the open tubules in your teeth and seal them off, thus stopping the main cause of tooth sensitivity. You should begin to feel relief within a week. Tooth Builder is fluoride free. Conventional tooth sensitivity toothpastes contain potassium nitrate, which works as a local anesthetic, calming sensitive tooth nerves. This kind of treatment is not as effective as stopping tooth sensitivity by blocking the open dentinal tubules, the way Tooth Builder does. Many people with sensitive teeth have already switched from conventional tooth sensitivity toothpastes to Tooth Builder in order to get relief. Tooth Builder stops most canker sores and mouth ulcers because it’s free of SLS (sodium lauryl sulfate) and other irritating ingredients found in most toothpastes, even the so-called natural ones. The patented, non-irritating detergent in Tooth Builder is mild enough for use in artificial tears. Tooth Builder’s Mouth Friendly ingredients fight bad breath, whereas the harsh ingredients in conventional toothpaste actually contribute to bad breath. Tooth Builder’s Mouth Friendly ingredients soothe your mouth?inside and out — and it is salicylate free. Ingredients include: 36% Xylitol, water, calcite, glycerin, poloxamer, cellulose gum, Methocel, calcium propionate, and lactoferrin. Tooth Builder does not contain fluoride or salicylates. Directions: Floss. Brush 2 minutes with Tooth Builder 2-3 times daily. For ages 6 and up. Each tube contains 4.4 oz.