Two ways to take a sitz bath are by using the bathtub or using a specially made plastic kit that fits over the toilet, according to Healthline. After filling the tub with several inches of clean, warm water, the person sits in it and soaks for 15 to 20 minutes.
A sitz bath is way to gently cleanse and soothe the area around the perineum. It is useful for treating hemorrhoids and other conditions that cause pain or itching in this area, says Healthline. Some people add baking soda or vinegar to the water, which can provide additional relief. A doctor may also recommend adding medication to the water.