Our teeth whitening serum contains sodium bicarbonate and sorbitol. It can eliminate bad breath, relieve tooth sensitivity, bleeding gums and other problems, effectively reduce bad breath, and make your teeth healthier. The way to use it is simple: first apply the serum directly to the toothbrush, then brush your teeth, or apply the serum to the toothpaste and use it together, daily use can make the effect better. After use, it can dissolve and clean the stubborn yellow dirt on the surface of the teeth, inhibit the growth of harmful bacteria, effectively remove the dental plaque and tooth stains on the surface of the teeth, and solve the gum discomfort and bad breath.