For Mouth Ulcer. Before using the product for the first time, remove the cap and apply the directed (applicator), after having discarded the protective film. Address the directed (applicator) to the lesion in the mouth and spray 3 times or more as needed. With direction, the product can effectively reach lesions located at the rear of mouth. Apply 3 / 4 times a day or more as needed Do not eat or drink for at least an hour after application.