1, prepare a bucket, add a lot of water to the bucket, burn it quickly with heat, and heat it in a few minutes.

2. If you have a water heater at home, you can also connect the hot water in the water heater.

3. Pour hot water into the bucket for washing feet and add appropriate amount of alum. After the alum melts, you can put your feet in it. You can soak once a night for a week.