This is not true. After using whitening toothpaste, teeth will look whiter. In fact, the principle of action is to polish teeth and make them look whiter visually.

In fact, some citizens will form dental calculus on their teeth because of their living habits such as smoking, drinking tea and drinking coffee. It is difficult to remove calculus by brushing your teeth. Whether for beauty or oral health, it is recommended to clean your teeth once a year and go to a regular stomatological hospital for examination.

Whitening toothpaste is not really whitening.

According to Dr. Lu Yongjun from Chongqing Huaxi Stomatological Hospital, toothpaste consists of functional additives such as friction agent, humectant, thickener, foaming agent, essence and water. In fact, the color of normal people's teeth is not as white as the star in the advertisement, but slightly yellow milky white. Whether the teeth are white or not is related to the toothpaste used, brushing time, brushing method and oral health.

Dentists suggest that adults should brush their teeth for about 3 minutes, but in fact, many citizens don't have enough time to brush their teeth, and their brushing methods are also wrong, which has little to do with whether they use whitening toothpaste or not.