Prisyna Alcohol-Free Mouthwash Most of the popular oral rinses aren’t very good for your mouth. And that means they aren’t very good for the rest of your body. Many alcohol-based rinses contain up to 28% alcohol and the so-called alcohol-free brands can be little more than flavored soap. What’s worse, these popular oral rinses indiscriminately kill both beneficial and harmful oral microbes in your mouth. Synedent is a soothing, fresh mouth cleanser that promotes healthy teeth and gums without the pain or burning caused by harsh chemicals or alcohol. Synedent freshens breath and helps to clean teeth and gums, leaving the mouth feeling healthier. Synedent is made from naturally derived and eco-friendly compatible ingredients. Formulated at a neutral pH, Synedent provides a safe environment that won't harm enamel or healthy or damaged oral tissue.