Pans, iron or aluminium alloy?
Shuaguo should be minimal when using detergent, to prevent the oil layer 'protective layer' brush was doing.
Iron pots are easy to rust and should not be served overnight
After brushing the pot, but also try to wipe the water in the pan, in case of rust.
Before the new pot is used, it should be dealt with first: add heat first, and then use pig skin for many times, so as to form a protective layer on the surface of iron pan.