A small amount of Botox is injected through a very fine gauge needle into the underarm area. Discomfort is minimal during treatment. Depending on the severity of the hyperhidrosis, multiple injections may be needed.
Within two to four weeks of the initial treatment there will be significant reduction in underarm sweating. There is a possibility that some sweat glands may be missed during the Botox injections. If this occurs, underarm sweating may continue from the untreated areas and a touch-up treatment may be needed.
Results vary from person to person; however, Botox injections for hyperhidrosis treatment will need to be repeated every four to six months.
In one clinical study, 81 percent of patients treated with Botox achieved a greater than 50 percent reduction in excessive underarm sweating. Keep in mind, Botox is not a permanent cure for hyperhidrosis, it is simply a treatment for it. Over time, the symptoms will gradually return if repeat injections are not performed. Depending on the severity of the condition, injections may need to be repeated two or three times a year.