Chanel cream was useless for months after it was opened, and there was almost nothing in it. What happened?

If others don't use it, or the lid is not tightly closed, the cream will evaporate after a period of time. This is no joke. Chanel cream, Guerlain orchid cream and other good quality creams all have this phenomenon, which I have encountered.

Besides, Chanel has some face cream on the hood of a moving car. You will find that the face cream vibrates like tofu and then sinks a lot like liquid.