Mouth ulcers cause pain due to nerve endings being exposed to external aggression, therefore it is important to ensure that they are protected. Just like plasters are used on other parts of the body to protect against external aggression we can do the same for ulcers. Bonjela Complete Plus creates a protective barrier over the mouth ulcer that covers and sticks, protecting from external aggressions (food, etc.) which lasts up for up to four hours. Bonjela Complete Plus soothes pain and aids the healing of mouth ulcers and small wounds in the mouth cavity. It comes with an applicator, allowing accurate application so ulcers can be targeted easily.