The alcohol that Allah prohibited is the Khamr ( intoxicant alcohol ), and not every alcohol is intoxicant alcohol. The intoxicant alcohol that we find in foods and beverages nowadays is ethyl alcohol. Mouthwash products usually contain menthol, thymol, and eucalyptol alcohol which are not intoxicant alcohols. Therefore using mouthwash products that contain alcohol is permissible for medicinal use only. If it is not for medicinal use, then using mouthwash with alcoholic ingredients should be avoided because of the existence of a permissible alternative that is alcohol-free.