Wash the cleaner before use. After brushing your teeth and rinsing your mouth, hold the handle lightly and place the protruding side of the cleaner against the back of your tongue. Move it toward the front, changing the area as you go, and repeat 2–3 times using slow, gentle pressure. Keep hold of the cleaner during use. Rinse your mouth afterward.
Do not rub the tongue forcefully or insert the cleaner too far back. Do not use if your tongue is irritated. Stop using the product if it becomes discolored or damaged, or if you experience an unusual sensation. Keep away from oils found in essential oils and detergents, as they may alter the material. Store away from direct sunlight, high temperatures, and humidity, and keep out of reach of children and pets.