First of all, wash the scalded area with cold water immediately. If there are no obvious blisters or lacerations on the skin mucosa, apply some scald cream, which may gradually recover after a few days. If there is a small blister, it is generally not necessary to break it, and it may be absorbed slowly in a few days. You can disinfect with iodophor, then apply some scald ointment or Jingwanhong ointment and take some anti-inflammatory drugs to prevent infection.
If the blister is big, you can use a syringe to pump out the liquid inside and then disinfect it with iodophor. Wrap the affected limb with scald ointment and gauze, and don't get wet. Take some anti-inflammatory drugs to prevent infection, and you will recover slowly. Try to eat as lightly as possible during this period. Don't drink alcohol and eat Chili, otherwise it may have some influence on the recovery.