Our Nicotinamide Toothpaste contains niacinamide, mint leaf extract, and sodium phytate. It can effectively help remove stains from the surface of the teeth, keep the mouth healthy, and make the teeth look harder. The way to use it is very simple: squeeze the appropriate amount of toothpaste into the toothbrush, brush gently for three minutes, and finally rinse the mouth with water until the mouth is clean. It can reduce tooth stains and yellowing, remove food particles and deep stains embedded in your teeth, and make your teeth whiter and cleaner.