Mouthwash

History of Mouthwash and how it became known?
The first known references to mouth rinsing is in Ayurveda and Chinese medicine, about 2700 BC, for treatment of gingivitis. Later, in the Greek and Roman periods, mouth rinsing following mechanical cleansing became common among the upper classes, and Hippocrates recommended a mixture of salt, alum, and vinegar.The Jewish Talmud, dating back about 1800 years, suggests a cure for gum ailments containing "dough water" and olive oil.
http://en.wikipedia.org/wiki/Mouthwash