Treatment of wool cap deformation
If the wool cap is deformed, it is probably caused by the pressure of heavy objects. At this time, it can be soaked in warm water for a period of time, and it can be propped up to dry after about fifteen minutes, or it can be quickly recovered by blowing it in the deformed position with a hair dryer.
If it is a beret, you can soak it in warm water for a while and take it out when it feels soft with your hands. After that, the hat can be propped up with inflated balloons and dried in the ventilated sun, and it can be made into its previous appearance in about one day.
For other kinds of hats, because they are usually worn for a short time, they are placed under clothes or washed by a washing machine, so there will be deformation. At this time, you can stuff some soft things into the hat to support and shape it. Hand washing is the main way to wash them.