Listerine Smart Rinse Mouthwash - Alcohol and Sugar Free Mouthwash A fun and easy way to protect teeth for kids aged 6+- Helps protect against cavities- Cleans what brushing misses Listerine Smart Rinse is a fluoride mouthwash that helps protect your child"s teeth against cavities when used twice daily after brushing.- Contains fluoride, which strengthens teeth and reduces cavities by up to 40% more than brushing alone.- Kills bad bacteria, a major cause of plaque and gum disease.- Goes around the whole mouth reaching teeth, gums and tongue. It attracts and tints the bits that brushing misses, showing your child the proof in the sink.