Damage to oral mucosa, leading to dentin hypersensitivity, gingival bleeding and other oral problems. According to 39 Health Network, toothpaste Ziguang toothpaste is in danger of false propaganda. After inspection by relevant departments, Meiya Enzyme Ziguang Toothpaste did not meet the requirements, and the product was suspected of false propaganda. The whitening effect is due to the addition of a large amount of bleaching agent, which will damage the oral mucosa for a long time, leading to oral problems such as dentin hypersensitivity and gingival bleeding.