Hot water washing with herbal "medicine waters," two techs: This swedena, or heat application treatment, utilizes warm herbalized water which is poured on the body, over and over again very quickly, to open the pores and induce sweating. The herbal fluid actually enters the skin through the pours and flushes the toxins out that have been loosened by several days of abhyanga and potra potali. Parishek is continued for a number of days (up to seven or more) until the vaidya is satisfied, through the pulse, that the toxins in the skin have been adequately removed.  "Parishek immediately increases the peripheral blood flow and also it takes away the blockages, whatever are there. It is a type of steam or swedena [heat treatment] and immediately takes away the superficial doshas [imbalances] that have come up. Traditional swedena daily is not advisable. It’s too much, and especially has to be done only for not more than 10 -15 min, and has to be done lying down, not sitting (many people now are using the sitting chambers, which are not good). Also, after the swedena, you have to clean the machine very properly [to avoid bacteria growth]." Dr. Krishna Raju