Iontophoresis (also known as ionization therapy) has been used to treat hand sweat and foot sweat for more than 70 years, but most sailors do not understand this treatment. What is iontophoresis? Very simple is to soak your hands and feet in water (below). How does it work in the process of ionizing treatment of hand sweat and foot sweat? The mechanism of action is still not fully understood. It mainly uses direct current to make ionized substances pass through the intact skin. There are several theories: including blockage of sweat glands due to ion deposition, obstruction of sympathetic nerve transmission, or a decrease in pH due to accumulation of hydrogen ions. In most cases, only simple tap water and ionization equipment are needed. In some cases, the treatment plan may need to be adjusted. How effective is it? Studies have shown that iontophoresis can indeed relieve many sweaty patients. For example, in the early stage (1952), 113 patients with hyperhidrosis were treated with iontophoresis, and the effective rate was 91%. In a 1987 study, 18 patients with hand sweat were given the treatment, and the results showed that 15 cases (83%) had reduced hand sweat. What are the side effects? The adverse reactions of iontophoresis are usually mild and generally do not affect the continued treatment, such as mild electric shock, skin redness, blisters, dry skin, and cracking. In addition, discomfort, including burning sensation and acupuncture, is more common. Is the treatment cost expensive? The cost of treatment is also one of the keys. At present, there are three kinds of iontophoresis treatment equipment approved by the US FDA (R.A. Fischer (MD-1a and MD-2) and Drionic). Some Bao also has similar products. Although the workmanship is very simple, the price is relatively close to the people. Drionic® WirelessHand/FootDevices, the network price of this device is $273. Which hyperhidrosis is suitable for ionization treatment? Hand sweat and foot sweat are suitable for iontophoresis, and armpit sweat also has corresponding treatment products, but it is definitely not as convenient as hands and feet in actual use. Who is not suitable? Pregnant women, those with pacemakers or large amounts of metal implants, and those with heart disease or epilepsy are not suitable for use.