By placing your feet in the warm, salty, ionised water activates an electronic array. This sends energising electrical signals up through the lymphatic system which stimulates the detox process. You simply sit back and relax for 30 minutes whilst the foot spa helps to draw toxins out of your body. Drinking water during the treatment helps flush the toxins out. The water in the foot spa will change colour during the treatment - some of this comes from the array and some from your body.