The clean water cup is soaked by tea, coffee, milk tea and other drinks for a long time. Dark tea stains, coffee stains, etc. will be left on the inner and outer walls of the cup. It is generally impossible to wash with detergent. Only two small things are needed. The cup is washed white.
Coup 1, toothpaste to stain
In the place with stains, apply a thin layer of toothpaste. After standing for 30 seconds, wipe it with a sponge and a little water. When the foam is wiped out, rinse it with water and the stains in the cup will be washed away.
[Away from]: Toothpaste also has an alkali component. Alkali has a certain degree of decontamination ability, and can effectively remove stains on the surface of ceramic products.
Coup 2, decontamination of dried tea
Office workers can't carry toothpaste with them, but one or two bags of dried tea are still available. Wet the inner wall of the cup with water, grab a little dry tea and rub the inner wall of the cup. After a few seconds of friction, the tea stain on the inner wall of the cup can be seen to be wiped off.
[Principle]: Tea contains alkaloids and has a certain decontamination ability. When dry tea leaves are rubbed, the adherence of the cup wall is removed.
Coup 3: Potato skin decontamination
Put a few pieces of potato skin in the cup, then pour in the boiled hot water, cover it for 5-10 minutes, pour out the potato skin and wash it with water, the cup will be clean.
[Principle]: Potato skin contains a lot of starch. After boiling with boiling water, the starch forms a colloidal solution. This colloidal solution has good adsorption and decontamination ability.
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