Botulinum toxin injection technique for axillary hyperhidrosis

Worried about excessive underarm sweat?

In addition to causing discomfort, axillary hyperhidrosis may interfere with daily activities and cause significant social distress. Perhaps you have tried many topical products, such as deodorants, lotions… but none have worked effectively for you.

Therefore, you want to find out if there is a more effective treatment.

doctora verónica ruiz especialista en cirugía de mohs

My experience

After having accumulated years of experience with the practice of this technique, I have been able to see a before and an after in patients affected by excessive armpit sweating.

The treated patient is not only deeply grateful for the results, but also discovers a significant improvement in their emotional well-being.

Botulinum toxin injection as an effective solution to axillary hyperhidrosis

In just a few hours or a few days you will be able to check the effectiveness of the technique; not only will you experience a considerable reduction in sweating, but you will forget about it for months.

Primary axillary hyperhidrosis is a disease of unknown cause, which interferes with daily life due to an excessive armpit sweating. It usually begins during adolescence and affects men and women equally. When it is associated with bad axillary odor it is called bromhidrosis.

The use of botulinum toxin for the treatment of axillary hyperhidrosis was approved in 2004. Since then, the botulinum toxin injections have been used as a treatment for focal hyperhidrosis with safety, efficacy and high levels of patient satisfaction. In addition, many studies have shown that botulinum toxin is a safe, effective and durable method of treating patients with primary hyperhidrosis.

How will I proceed with this treatment?


Preparation of the area to be treated

Firstly, we must carry out an adequate local antisepsis to avoid infectious complications derived from the small local trauma caused by the injections. After correctly identifying and marking the area to be treated, the toxin is injected using a small-gauge intradermal needle. Approximately 10-20 injections per armpit are necessary, maintaining spaces of 1-2 cm between the different injection points.


30 minutes procedure

The procedure usually lasts for approximately 30 minutes.


Effects and results

The effects of the treatment begin between the first 24 hours and up to 4 days after performing the injections. The effects of botulinum toxin usually last for 6-9 months on average, and treatment is associated with a high satisfaction rate among patients. Sometimes, longer lasting effects (9-12 months) are seen after treatment.

Frequently asked

No special preparation is recommended. To minimize the effect of the puncture, an anesthetic cream can be applied about 30 minutes before the technique.

Complications associated with the technique are very rare. The most common side effects are pain, swelling or bruising at the injection site. Some patients may have excessive sweating on untreated skin areas. In exceptional cases, severe hypersensitivity reactions such as anaphylaxis and urticaria have been reported.

No. The patients can develop their normal activity on the same day of the treatment. It is recommended not to do  physical activity within the 2-3 hours after the procedure.

From 6-8 months after injections, the effect of the toxin is minimal, so it is recommended to repeat the injections at least once a year.

There is no approved indication for the use of botulinum toxin in the treatment of axillary hyperhidrosis in children under 18 years.  Botulinum toxin is contraindicated in pregnant and breastfeeding women and individuals with pre-existing medical conditions that cause muscle weakness (ELA, myasthenia gravis) or previous allergic or hypersensitive reactions to botulinum toxin.