Our niacinamide toothpaste contains sodium lauryl sulfate and hydroxypropyl methyl cellulose. It can dissolve and clean the stubborn yellow dirt on the surface of the teeth without damaging the tooth enamel, and form a protective layer in the mouth to reduce tooth decay, effectively reduce bad breath and fresher breath. The way to use it is very simple: squeeze the appropriate amount of toothpaste onto the toothbrush, brush gently for 1-2 minutes, and finally rinse with water until the mouth is clean. It can effectively remove stains on the surface of your teeth, make your teeth whiter, and make your smile brighter.