Our Teeth Whitening Mousse contains soda, glycerin, and mint essence. It can dissolve and clean stubborn yellow stains on the tooth surface without damaging the enamel, and forms a protective layer in the mouth to reduce cavities. Its usage is simple: first apply mouthwash on the mouth 1-2 times, rinse for 20 seconds, spit out foam, then squeeze an appropriate amount onto a toothbrush. Brush teeth and tongue for 2-3 minutes. After use, it can keep the mouth fresh, inhibit harmful bacteria growth, effectively remove plaque and stains on the tooth surface, solve gum discomfort and bad breath issues