The active ingredient of the regular brand of whitening toothpaste is a low concentration of peroxide, generally at a concentration of less than 10%, when used correctly, it can ensure the safety of the teeth and gums, but also to achieve the effect of whitening, which has been confirmed by countless experiments. However, the wearing cycle should be calculated in weeks, at least two weeks to have a more obvious effect.

In addition, during the whitening period, due to the action of peroxide on the surface of the teeth, it will make the teeth more susceptible to staining by pigments in food and drink. So try to eat and drink white or colorless, such as water, milk, chicken and fish, and so on. At least avoid tea, red wine, soy sauce, and certain brightly colored fruits.