Jonos AS30 passes a smooth direct current through skin immersed in water. Rubber–graphite electrodes wrapped in wet sponges sit in shallow plastic trays; the charge pulls ions through the tissue and shifts local pH in ways that temporarily reduce sweat gland output. Alternating polarity matters because each direction moves different ion species—together they recreate the biological effect described in iontophoresis literature for excessive sweating.

Fill the trays with a small amount of water, moisten the sponge covers, rest palms or feet on the electrodes, then raise the milliamps slowly until a light tingling begins—never painful burning. Run roughly fifteen minutes on one polarity, tap the polarity button, and complete another fifteen on the opposite sign. Most people integrate this into weekly slots until dryness holds, then space maintenance visits apart.