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.

According to the function of mouthwash, functional additives include antibacterial agents, astringents, anti caries agents, anti plaque and gingivitis compounds, anti-inflammatory agents, desensitizers, deodorants, etc.