One or two. The manufacturer's wording is results in as little as one treatment, with the best results in two, and the clinical guidance places the second about three months after the first. In a retrospective 2025 series of 139 patients from one Austrian clinic, using the newer miraDry fresh protocol, 84% needed only one session. At Sweat Hospital, 130 Harley Street, the clinician scores your sweating before the first session and again at the review, and in our practice a second session is planned only if the score says so.
Why one session is often enough
A session treats the whole of each underarm. The area is marked out, numbed with local anaesthetic, and the handpiece is moved across it in sections, each one heating the layer where the sweat glands sit while the surface is cooled. The manufacturer says the destroyed glands do not grow back, and in the randomised trial, where most patients had two sessions about two weeks apart, 69% still rated their sweating never noticeable or tolerable a year after treatment.
When a second session is planned
In our practice a second session is planned at the three-month review if your sweating score is still high; NICE describes a second session about three months later as typical.
The second session is the same procedure. It is priced per session, in writing at the consultation, so you know the cost of a second before you have the first.
What a session involves
About an hour to ninety minutes in all. You shave four to six days before, the underarms are marked with a temporary template, the anaesthetic goes in and you wait at least ten minutes for it to work, then each underarm is treated in up to 20 minutes. Ice afterwards, no vigorous exercise for about three days, and the how it works page describes the rest.
Book a free consultation
Call Sweat Hospital on 0207 043 1116 or use the form below. The clinician scores your sweating, says whether one session or two is likely for you, and gives you the price in writing.
