Oral Defense is an oral hygiene product that was developed to help prevent the spread of harmful microbes to the rest of the body. Many people harbor microbes that have the potential to cause dysbiosis in their mouths and under their gums. Ultrasonic cleaning or even mechanical cleaning can possibly help spread these organisms further down into the digestive tract and perhaps to other parts of the body. These organisms can come from food, water, sexual activity, etc. Clinical trials have helped us develop a proprietary blend of 2 essential oils that appear to help control this phenomena. We have used it as follows: Before and after brushing we take one drop of Oral Defense and apply it where the gums and teeth meet (top and bottom, front and back of teeth). Twice weekly, we also take 3 drops in a little water (it doesnt mix well) and swirl our toothbrush in it for ten seconds and then rinse it off. This is an all-natural product unlike most dental hygiene products on the market that contain alcohol (up to 27%) as well as sweetening and chemicals.