Davids mouthwash refill concentrate keeps breath fresh and promotes enamel health. Crafted with natural ingredients, this alcohol-free formula detoxifies the mouth without burning. It contains Hydroxi nano hydroxyapatite to help strengthen enamel with a natural fresh mint essential oil blend. This refill system allows for easy preparation; simply mix the concentrate with water. Part B is sold separately to create the full mouthwash solution. Enjoy up to 96 uses from one refill.