Enamelast™ fluoride varnish is a flavored, xylitol-sweetened, 5% sodium fluoride in a resin carrier that produces a mechanical/chemical occlusion of the dentinal tubules in the treatment of tooth hypersensitivity. Its patented adhesion-promoting formula enhances retention, providing superior fluoride release and uptake. It is non-gritty, nearly invisible in appearance, and is available in five great-tasting flavors and two delivery options. Enamelast varnish is nut and gluten free.