That plastic cup is mouthwash, but it's actually bought for drinking water. I bought it by mistake. Can I use it as mouthwash?

Mainly depends on whether the plastic is heat-resistant and can be used for a long time.

A cup is a special container for holding water. Its main function is to drink water or tea, and its volume is generally small. Or in ancient times, the cup used for drinking tea was called a bowl. The basic type is mostly straight or open, and the diameter of the mouth edge is almost equal to the height of the cup. Flat bottom, round feet or high feet. Archaeological data show that the earliest cups began in the Neolithic Age.

Whether in Yangshao culture, Longshan culture or Hemudu culture, there are ceramic cups, and the cups in this period are the most peculiar and diverse: those with ears are single or double ears, and those with feet are mostly conical, three-legged cups, special-shaped cups and high-handle cups. According to different materials, it can be divided into glass cups, plastic cups, ceramic cups and wooden cups.

Cup category:

There are many kinds of cups, which can be divided into ceramic cups, glass cups, plastic cups, stainless steel cups, Muyu stone cups, cloisonne cups and so on. According to the function, it can be divided into daily cup, advertising cup, promotion cup, insulation cup, health cup, etc. According to the meaning, it can be divided into acacia cup, couple cup, couple cup, etc. According to the structure and technology, it is divided into single-layer cup, double-layer cup, vacuum cup, nano cup, energy cup, ecological cup and so on.