Underarm Botox typically costs about $1,000 per session for both armpits when paid out of pocket. That price can shift significantly depending on your location, the provider’s experience, and whether your insurance covers any portion of the treatment. Since results are temporary, the real cost question is how much you’ll spend over time.
What Drives the Price
The standard treatment involves about 50 units of Botox injected into each armpit, spread across 10 to 15 small injection sites per side. That means a full session uses roughly 100 units total. Most providers price Botox per unit, so if a clinic charges $10 to $15 per unit, you’re looking at $1,000 to $1,500 per visit. Some clinics offer a flat fee for the procedure instead, which can work in your favor if per-unit pricing runs high in your area.
Geographic location matters. Clinics in major metro areas like New York, Los Angeles, or Miami tend to charge more than practices in smaller cities or suburban areas. The type of provider also affects cost: dermatologists and plastic surgeons often charge more than nurse practitioners or physician assistants performing the same procedure under supervision. That said, experience with the specific injection technique matters more than the title on the door.
How Long Results Last
Most people notice dryness within a few days of treatment, with full results settling in over the first two weeks. The effects typically hold strong for about four months, though clinical studies report a wide range of four to 17 months before sweating returns to pre-treatment levels. Your individual response depends on how severe your sweating is, your metabolism, and how your body processes the toxin over time.
For most people, two to three sessions per year keeps underarm sweating under control. At $1,000 per session, that puts annual costs between $2,000 and $3,000. Over five years, you could spend $10,000 or more on maintenance treatments alone, which is worth factoring into your decision.
Insurance Coverage Is Possible but Conditional
Insurance can cover underarm Botox, but only when the treatment is deemed medically necessary for severe primary axillary hyperhidrosis. “Severe” is the key word. Insurers generally won’t approve coverage for mild or moderate sweating, and they won’t cover it if the purpose is cosmetic.
To qualify, you typically need to meet several criteria. The prescription must come from a dermatologist or neurologist. You need documented proof that you tried a clinical-strength antiperspirant containing aluminum chloride and that it either didn’t work, caused a reaction, or couldn’t be used for medical reasons. Your provider must also submit documentation of your diagnosis, the severity of your condition, and the specific treatment plan.
If your insurance does approve coverage, you may still owe a copay or coinsurance. Call your insurer before scheduling to ask whether they cover botulinum toxin for hyperhidrosis and what documentation they require. Getting this sorted out in advance can save you hundreds or thousands of dollars.
What the Appointment Looks Like
The procedure itself takes about an hour. Your provider may apply a numbing cream or use ice to reduce discomfort before injecting small amounts of Botox just beneath the skin’s surface at each injection site. Some clinics apply an iodine-starch test first, which highlights the areas that produce the most sweat so injections can be placed precisely.
There’s essentially no downtime. You can go back to normal activities right after the appointment, with a few minor restrictions: skip exercise for 24 hours, avoid antiperspirants for two to three days, and hold off on alcohol for the first day. Most people return to work the same day without any visible signs of treatment.
How Botox Stops Sweating
Sweat glands are activated by a chemical messenger called acetylcholine, which nerves release to signal “start sweating.” Botox blocks that signal at the nerve ending, preventing acetylcholine from being released. Research has also shown that Botox reduces the sweat gland’s ability to respond to acetylcholine even if it’s present, creating a double layer of sweat suppression. The effect is localized to the injection area, so the rest of your body continues to sweat and regulate temperature normally.
Side Effects Are Generally Mild
The most common side effects are temporary soreness, bruising, or small bumps at the injection sites. These usually resolve within a few days. Some people experience a slight increase in sweating in other body areas (called compensatory sweating), though this is more commonly reported with surgical treatments than with Botox. Serious complications are rare, particularly when the injections stay in the shallow skin layer as intended.
Botox vs. Permanent Alternatives
If the recurring cost of Botox concerns you, permanent options like microwave-based treatments (commonly known by the brand name miraDry) destroy sweat glands rather than temporarily blocking them. These treatments typically require only one or two sessions, making them more cost-effective over the long term despite a higher upfront price, often $2,000 to $3,000 per session. The tradeoff is a longer recovery period and the irreversibility of the procedure. Many people start with Botox to confirm that reducing underarm sweat improves their quality of life before committing to a permanent solution.