Completely new well-being mouthwash. IsoDent Niitty is based on an old, guarded Eastern recipe, in which we have added new, active ingredients from modern Western dentistry, such as fluoride, xylitol, and erythritol, which helps you prevent tooth caries. Nature’s betaine works effectively against dryness of the mouth, helping to prevent the growth of oral fungus, tooth surface erosion and to prevent bad breath. Mouthwash refreshes the mouth for a long time without alcohol and is very pleasant to use. Take about ½ cap of mouthwash and swish it thoroughly in your mouth for about a minute after brushing your teeth and then spit it out.