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Under the experimental conditions, a toothpaste sample was used to compare the removal of exogenous stains with a control sample. The toothpaste sample was able to effectively remove exogenous stains such as smoke stains, tea stains, and coffee stains after 3 days, and had a stain removal and whitening effect. * Under the experimental conditions, a toothpaste sample was used to compare the removal of exogenous stains with a control sample, and it was found that this product has a whitening and stain removal effect. After 3 days of use, the whitening and stain removal effect increased by 185.21%.