Iontophoresis Device: How It Works and What to Expect

An iontophoresis device delivers a mild electrical current through water to help reduce excessive sweating in treated areas. It is a small treatment system in which hands, feet, or another suitable area rests in shallow trays. The current changes the local environment around sweat ducts and can lessen sweat output over a course of treatment. It is also called a tap water iontophoresis unit.

The skin is placed in the water-filled trays, or pads are positioned as directed. The current is increased gradually until it feels like a tolerable tingling sensation; sharp discomfort, burning, or pain is a reason to stop and check the setup. Sessions are repeated on a schedule chosen for the body area and response. Once sweating is controlled, maintenance sessions may be needed because the effect can fade when treatment stops.

Iontophoresis does not remove the underlying tendency to sweat, and it is not suitable for every body site or every person. Results vary with regular use, skin condition, treatment settings, and the cause of sweating. The device may be inconvenient if frequent sessions are difficult to fit into a routine. New, widespread, or sudden sweating needs medical assessment rather than self-treatment, because the symptom may have causes that require a different approach.

Depending on the diagnosis, a clinician may discuss topical antiperspirants, medicines, injections, or other procedures. The choice depends on where sweating occurs, how it affects daily activities, other health conditions, and previous treatment response. The treatment page for [Iontophoresis](/treatments/laser-and-energy/iontophoresis/) explains the related clinical option.

For a patient, the device is a repeatable way to target sweating in a specific area without an operation. You should expect gradual assessment of comfort and response rather than a one-time decision. Keep a simple record of treated areas, session timing, sweat changes, and skin reactions so the plan can be adjusted. Mention whether sweating began suddenly, affects sleep, or occurs with other symptoms.

Do not use the device over broken, infected, or inflamed skin unless a clinician specifically advises it. Remove metal jewellery from the treatment area. People with implanted electrical devices, certain metal implants, or pregnancy should obtain medical advice before treatment. Follow the device instructions, avoid sharing personal contact components, and seek advice for persistent redness, blistering, numbness, or worsening pain.