Underarm Botox for Hyperhidrosis
Underarm Botox is a well-established, FDA-approved treatment for axillary hyperhidrosis, the medical term for excessive underarm sweating. A short series of small, superficial injections blocks the signal that activates the sweat glands, with relief lasting four to seven months.
Hyperhidrosis is a medical condition of sweating beyond what the body needs for cooling. The most common form, axillary hyperhidrosis, affects the underarms and is often disruptive socially and professionally, ruined shirts, anxiety before meetings or events, frequent wardrobe changes. It is not a sign of poor hygiene; it is a difference in how the sweat glands are signaled. Conservative measures (clinical-strength antiperspirants, prescription topicals) help some patients, but many do not get adequate relief.
Underarm Botox, also called axillary Botox or Botox for sweating, has been FDA-approved for this condition since 2004 and is the standard of care when conservative measures fail. Dysport, Xeomin, and Daxxify are also commonly used.
Sweat glands are activated by a chemical messenger called acetylcholine, released by tiny nerve endings just under the skin. Botulinum toxin type A blocks the release of that messenger. Without the signal, the gland stops producing sweat. The effect is local; the body still cools itself normally through other regions.
The treatment is a grid of very small, very superficial injections placed across each underarm. The skin is mapped first so that every active area is treated. Each side takes only a few minutes.
Most patients notice meaningful reduction in sweating within 4 to 7 days, with full effect by 14 days. Relief typically lasts 4 to 7 months, often longer than facial Botox because the underarm muscles do not work against the treatment in the same way. Some patients return once a year; others come twice a year. The effect tapers gradually rather than wearing off suddenly.
Many insurance plans cover Botox for documented hyperhidrosis once conservative measures have been tried. Documentation usually requires a record of failed clinical-strength antiperspirant and/or prescription topical therapy. The office can guide you through your plan’s specific requirements.
Dosing is mapped to the actual sweating distribution, not a default pattern. Patients across Los Angeles, Santa Monica, and Beverly Hills come to her for hyperhidrosis treatment for the same reason they come for cosmetic work: precise, anatomic dosing, performed by the surgeon herself, with the same hand at every visit.
- Visit
- 20 to 30 minutes.
- Anesthesia
- Topical numbing or ice; injections are very superficial.
- Onset
- Reduction in sweating within 4 to 7 days; full effect by 14 days.
- Duration
- 4 to 7 months, often longer than facial Botox.
- Products available
- Botox, Dysport, Xeomin, Daxxify.
- Downtime
- None. Light bruising possible; resume normal activity the same day.
- Maintenance
- Most patients return every 6 to 12 months.
- Insurance
- Often covered for documented hyperhidrosis after failed conservative therapy.
How quickly will the sweating stop?
Most patients notice meaningful reduction within 4 to 7 days, with the full effect by 14 days. If a small touch-up is needed, it is usually done at the 2-week mark.
Will I sweat more somewhere else?
This is a common concern. The clinical evidence is reassuring: meaningful compensatory sweating elsewhere is uncommon with Botox treatment. The body has many sweat glands; quieting one area does not force overactivation of another.
How many injections does it take?
Each underarm receives a grid of 15 to 25 small, very superficial injections, mapped to the area where sweating occurs. The whole visit, both sides, takes 20 to 30 minutes.
Does it hurt?
The injections are shallow and small. Topical numbing or ice is used, and most patients describe it as a series of small pinches over a few minutes, well tolerated, with no downtime.
Can Botox be used for sweating elsewhere?
Yes. Hands, feet, scalp, and the face can be treated as well, with different dosing. These are evaluated and planned on an individual basis at consultation.
Will my insurance cover this?
Many plans do, with documentation that conservative measures (clinical-strength antiperspirants, prescription topicals) have failed. Coverage varies by plan. The office can discuss specifics at consultation.
How often will I need to repeat treatment?
Most patients return every 6 to 12 months. Underarm Botox often lasts longer than facial Botox because the treated area does not have muscle activity working against it.