LISTERINE® Advanced Enamel & Sensitivity Protection provides in depth protection and relief from the pain of tooth sensitivity and helps protect teeth from enamel erosion. The formula is clinically proven to prevent enamel erosion and helps to prevent yellowing of the teeth caused by dental erosion. LISTERINE® Advanced Enamel & Sensitivity Protection provides 24 hour relief from tooth sensitivity when used regularly twice a day for at least 2 weeks.