Elmex Protection Erosion is a specific toothpaste that reinforces the tooth enamel and effectively protects against the loss of enamel.Teandh erosion is dental enamel loss, caused by the direct contact of teandh with acids, brought for example by drink, food or gastric juices.These acids can weaken teandh enamel and gradually dissolve it. Elmex toothpaste Protection Erosion contains the ChitoActive complex, which properties have been scientifically proven: it protects from dental erosion more effectively than classical toothpaste, and reinforces then dental surfaces against repeated acid attacks.