Our Teeth whitening mousse contains baking soda, citrus extract and mint extract. It can help clean stains and residual impurities from the tooth surface, eliminate bad breath and protect gums and teeth, effectively neutralizing the yellow tone of the tooth surface. The way to use it is very simple: first squeeze the right amount of foam into your mouth, blow on your cheeks, let the foam flow over your mouth and gums, spit the foam out within 10-15 seconds, you will feel your mouth immediately refreshed, and then squeeze the right amount of foam on your toothbrush. Gently brush your teeth and tongue for 2-3 minutes. After use, it gently breaks down stubborn yellow dirt on the surface of teeth, removes tartar, freshens breath, eliminates bad breath, and protects teeth and gums.