A single underarm Botox session typically costs between $1,000 and $1,500 when paying out of pocket, though prices can range from as low as $700 to over $2,000 depending on your location, provider, and whether insurance covers any portion. The total cost depends primarily on how many units of Botox you need and how much your provider charges per unit.
How the Price Breaks Down
Botox is priced per unit, and most clinics charge between $15 and $25 per unit. The standard dose for underarm sweating is 50 units per armpit, so 100 units total for both sides. At those per-unit rates, the Botox itself runs $1,500 to $2,500. In practice, many providers bundle the product cost with the injection fee and offer a lower effective per-unit price, which is why total session costs often land in the $1,000 to $1,500 range.
Prices vary significantly by geography. Clinics in major metropolitan areas like New York or Los Angeles tend to charge at the higher end, while providers in smaller cities or suburbs may offer more competitive rates. The injector’s experience level also matters. A board-certified dermatologist who regularly treats excessive sweating may charge more than a general practitioner, but that expertise is worth seeking out since proper injection technique affects both results and side effects.
Insurance Coverage for Excessive Sweating
If you have a medical diagnosis of severe primary axillary hyperhidrosis (the clinical term for excessive underarm sweating), insurance may cover all or part of the cost. The FDA approved Botox for this condition in 2004, and many insurers treat it as medically necessary rather than cosmetic. That distinction is critical because cosmetic Botox is almost never covered.
Most insurance companies require you to demonstrate that you’ve already tried and failed with prescription-strength antiperspirants before they’ll approve Botox. Your dermatologist will need to document this history and submit a prior authorization request. Some plans also require a specific sweat test to confirm the diagnosis. The approval process can take a few weeks, but if granted, your out-of-pocket cost may drop to just a copay or coinsurance amount, potentially saving you hundreds of dollars per session.
If your insurer denies the claim, ask your provider’s office to file an appeal. Denials are common on the first attempt but are frequently overturned with additional documentation.
How Well It Works
Underarm Botox is one of the most effective treatments available for excessive sweating. Clinical data shows it reduces underarm sweat production by 82% to 87%. In one major randomized study, sweat output dropped from an average of 192 milligrams per minute down to just 24 milligrams per minute in the treatment group, compared to only a modest decrease to 144 milligrams per minute with a placebo. For most people, this means going from visibly soaked shirts to barely noticing any moisture.
Results typically kick in within two to four days after injection, with full effect by two weeks. The treatment lasts four to six months before sweating gradually returns, at which point you’d schedule a repeat session.
Ongoing Costs to Expect
Because the effects are temporary, underarm Botox is a recurring expense. Most people need two to three treatments per year to maintain results. At $1,000 to $1,500 per session without insurance, that adds up to roughly $2,000 to $4,500 annually. With insurance coverage, annual costs are significantly lower.
Some providers offer loyalty programs or package pricing for repeat patients. Allergan, the manufacturer of Botox, runs a rewards program called Allē that provides points toward future treatments. These savings are modest (typically $50 to $75 per session) but add up over time. It’s also worth asking your provider directly about multi-session discounts, as many clinics offer them for ongoing hyperhidrosis patients.
What the Procedure Involves
The appointment itself is quick, usually 20 to 30 minutes. Your provider will map out a grid of injection points across each underarm and distribute the 50 units per side across those points using a very fine needle. Most people describe the sensation as a series of small pinches. Some providers apply a topical numbing cream or use ice beforehand, though many patients find it tolerable without either.
There’s no real downtime. You can return to normal activities the same day, though most providers recommend avoiding intense exercise and hot baths for 24 hours. The most common side effects are mild injection-site pain and occasional small bruises that resolve within a few days. Some people experience a slight increase in sweating elsewhere on the body (called compensatory sweating), though this is less common with underarm treatment than with surgical options.
Finding the Right Provider
Look for a board-certified dermatologist who frequently performs Botox injections specifically for excessive sweating, not just cosmetic wrinkle treatment. The injection technique differs, and providers experienced with hyperhidrosis know how to distribute the units effectively across the sweat gland area. Cleveland Clinic dermatologists recommend choosing someone familiar with both the treatment protocol and the potential side effects specific to this use.
When comparing prices between providers, make sure you’re comparing the same thing. Ask whether the quoted price includes the consultation fee or just the injection, how many units are included, and whether they charge separately for numbing cream or other supplies. A lower headline price sometimes masks additional fees that bring the total in line with (or above) competitors.