Mouthwash is a kind of oral health care product and a solution. Usually, some ingredients are added to the solution, and it can be divided into many categories according to different ingredients. Mouthwash cannot replace brushing teeth. Neither health care mouthwash nor therapeutic mouthwash can be relied on. Daily oral cleaning should focus on brushing teeth and flossing.

The main function of mouthwash is to freshen the breath. The advantage of using mouthwash is that it can not only prevent bad breath, make the mouth clean and comfortable, but also wash away the food residues attached to the tooth surface after meals that have not been fermented by bacteria, reducing the chance of dental disease.