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%.
Under the experimental conditions, toothpaste samples were compared with control samples. When the test sample concentration was the original, it reacted with methyl mercaptan solution for 24 hours. The statistical difference P value of methyl mercaptan results was