How can you leave a scar if you're scalded by oil?

After being scalded by oil, there is usually no scar left. After scalding, you should first wash it with clean water for 20 minutes. Then you should be admitted to hospital for local disinfection and apply scald ointment according to the doctor's advice. If blisters rupture, you should also take antibiotics according to the doctor's advice for anti-infection treatment.