Dentyl pH is a brand of mouthwash. Traditional mouthwash formulations use alcohol or other antimicrobial ingredients to kill bacteria in order to control halitosis. Although Dentyl pH also contains a anti-bacterial agents (cetylpyridinium chloride, triclosan), it also contains an oil (isopropyl myristate) that offers high adhesion to bacteria (better than other bacteria or tissue) in order to remove bacteria from the mouth. The use of oil in a mouthwash product was proposed by Mel Rosenberg, following his study of bacteria that break down oil spills. Dentyl pH is marketed in the United States by Blistex and is (as of 2007) one of the top two mouthwash brands in the United Kingdom.

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