Why is there a yellow watermark after the white mesh sneakers are brushed? Please, 3Q.

Because there is residual washing powder and soap on it. Bleach and other washing products, and clean with water. Or you are exposed to the sun. . . Solution: 1 After brushing the shoes, put the shoes in water that can touch the depth of the shoes and brush them twice. When drying, cover the shoes with some white toilet paper. Knowledge of life is absolutely effective. . I hope it will help the landlord to adopt it! ~