What should I do if the water stain on the glass cup can't be washed off?

1, white vinegar: inject the same amount of white vinegar and warm water into the cup, the amount should not exceed 1/2 of the cup container, soak for several hours, and then brush with sponge cucumber cloth dipped in vinegar water solution, which can easily remove scale and tea stains. If the scale and tea scale accumulate too much, only white vinegar can be used. When washing glass, use the sponge surface of melon cloth to avoid scratching the surface and damaging the appearance. Technical sponge or special cup washing brush can also be used.

2. Toothpaste and baking soda: Toothpaste can also be used to clean glass. The method is simple. After washing with water, squeeze a little toothpaste on the soft cloth, wipe it back and forth on the glass, and then wash it with water. You can also use baking soda powder and appropriate amount of water to make a paste, and you can also wash away the scale.

3, salt+white vinegar: add a little salt to the white vinegar and stir well. Soaking with towel gourd cloth can be used to clean cups, which is helpful to remove greasy and stubborn dirt and achieve sterilization. Very easy to use! You can also cut the lemon and mix it well, dip it in the right amount of salt, and then use it directly to scrub the cup. Don't wipe the glass with a coarse sponge, it is easy to scratch and produce fine lines.