How long does iontophoresis take to work for hyperhidrosis?

During iontophoresis, the hands or feet are placed in shallow water while a mild electrical current passes through it. The treatment is repeated because one session does not usually maintain reduced sweating by itself. Timing varies with the body area, how heavily it sweats, the device settings, and how consistently sessions are completed. The first useful sign may be a change in dampness during ordinary activities rather than complete dryness.

Attend or complete sessions according to the schedule provided by your clinician or device instructions. Keep the treated skin intact and tell the clinician about cuts, eczema, metal implants, pregnancy, or medicines that may affect suitability. Remove jewellery before treatment and report persistent stinging, burning, or irritation. Keep a simple record of sweating during work, exercise, and rest; this gives the clinician a clearer basis for adjusting the plan and arranging maintenance.

Stop and contact the treatment provider if you develop significant pain, blistering, persistent numbness, marked redness, or skin cracking. Seek medical assessment for sudden sweating with dizziness, chest symptoms, faintness, fever, or a new general illness. A sudden change in sweating pattern can have causes that require assessment beyond local iontophoresis.

How many sessions should I try before judging the response? Which device setting is appropriate for my skin? How will we adjust treatment if irritation occurs, and how often might maintenance be needed?