Extraforte Serum for Weight Loss in Vials 10 vials Serum in vials for ionophoresis and a massage basis. It contains: fucus, Indian chestnut, iodine derivates. Apply one vial over both electrodes (positive and negative). Follow the timing and intensity prescribed by the device's manufacturer. Finish the treatment with a few minutes before the changing of the electrodes polarity. One applies it after the Scrub Gel and before massage.