What is a mouthwash?
Mouthwash, mouth rinse, oral rinse is a liquid which is held in the mouth passively or swilled around the mouth by contraction of the perioral muscles and/or movement of the head, and may be gargled, where the head is tilted back and the liquid bubbled at the back of the mouth.
Usually mouthwashes are an antiseptic solution intended to reduce the microbial load in the oral cavity, although other mouthwashes might be given for other reasons such as for their analgesic, anti-inflammatory or anti-fungal action. Additionally, some rinses act as saliva substitutes to neutralize acid and keep the mouth moist in Xerostomia (dry mouth). Cosmetic mouth rinses temporarily control or reduce bad breath and leave the mouth with a pleasant taste