Some of the cosmetics people use now are vacuum bottles that are pressed by people. It's ready to use with a few presses and then it's ready to pile into the palm of your hand. What principle can be used to squeeze things out? What material is the bottle made of? We need to understand it.
If the vacuum bottle of cosmetics is squeezed, then the material of the bottle needs to have a better choice. It shouldn't break easily. It is best to choose plastic materials, which are not easy to break and can withstand pressure. It is also relatively strong. Generally speaking, bottles containing cosmetics have a freely movable bottom plate inside the bottle, which then slowly moves upward during use. When the contents of the bottle are almost gone, the tray is ready for use. near the top of the bottle.
Open the lid again and push the movable tray as far as it will go. Bottles need to be rinsed multiple times because skin care products need to be cleaned before makeup can be put in them. If the pressure is not enough, try pressing harder so that the makeup can be squeezed out more easily.
This is the principle of vacuum bottles used to contain cosmetics. There should be better control during use. Don't let this stuff overflow. Be careful.
