Whitening tooth paste has certain whitening effect, but the effect of using whitening tooth paste may be different for different people, and it is recommended to use temporarily under the guidance of a doctor, long-term use or improper use may cause damage to teeth. The common active ingredients are strong oxides such as hydrogen peroxide or carbamide peroxide, which oxidize the tooth surface to achieve the effect of teeth whitening, and the whitening effect usually varies from person to person. However, because of the oxidizing nature of the paste, long-term use may damage the patient’s tooth enamel and oral mucosa. If the patient uses the paste in the wrong way, uses it too often or chooses a product that is not qualified, it may cause heavy damage to the teeth. Enamel destruction may lead to a more pigmented, rough and sensitive feeling tooth surface, and also susceptible to bacterial attack, inflammation and other conditions. If the stickers are used in an improper manner and come into contact with the oral mucosa, it may also lead to bleeding, redness and swelling of the oral mucosa. Therefore, if you want to whiten your teeth, it is recommended to go to a dental clinic and receive professional teeth whitening treatment. Pay attention to oral hygiene in daily life, brush your teeth with a toothbrush in the morning and evening, rinse your mouth after meals, avoid eating foods that stain easily such as coffee and tea, and avoid smoking.