BioEnergiser technology gently stimulates your body's natural detox processes to leave you feeling mentally and physically renewed. This is the same technology that you'll pay up to $40 per treatment for at a spa. Just fill with warm water, add the low sodium detoxifying salt, and turn it on for a relaxing, but revitalizing 30-minute detox session. The ionic reaction will actually darken the water as your body's natural detoxification process is kick-started and harmful toxins soak out through the 2,000 pores in your feet. Comes with supplies for 30 treatments: low sodium salt, energizing cartridge, tub liners, instructional DVD and a refill kit good for another 30 treatments- 60 treatments in all! Not for use by those with a pacemaker, during the first trimester of pregnancy, users with metal implants, epileptics, or children under 5.