Botox for both underarms typically costs about $1,000 per session, though prices range from roughly $700 to $1,500 depending on where you live and who performs the treatment. Because the effects are temporary, lasting around six to seven months, this is a recurring expense that can add up to $1,500 to $3,000 per year.
What Drives the Price
The standard treatment uses 50 units of Botox per armpit, or 100 units total. With per-unit pricing typically falling between $10 and $30, the math lands most people somewhere in that $1,000 range. But several factors push the final number higher or lower.
Geography is one of the biggest variables. Clinics in urban areas tend to charge $15 to $25 per unit, while rural practices may price closer to $10 to $15. A dermatologist in Manhattan and one in a midsize Southern city could quote you prices hundreds of dollars apart for the same procedure. Provider experience also matters: board-certified physicians and specialists with extensive injection experience often charge more than general practitioners or newer injectors. Some clinics roll the consultation fee into the treatment cost, while others bill it separately.
Insurance Coverage Is Possible but Not Guaranteed
Botox is FDA-approved specifically for severe primary axillary hyperhidrosis (the medical term for excessive underarm sweating) that hasn’t responded to topical treatments. That approval opens the door to insurance coverage, but insurers set their own requirements for what qualifies as medically necessary.
A representative example comes from MassHealth guidelines, which require all of the following before approving coverage: a formal diagnosis of severe primary axillary hyperhidrosis, a prescription from a dermatologist or neurologist, and documented proof that prescription-strength aluminum chloride antiperspirant either didn’t work, caused a bad reaction, or couldn’t be used. Most private insurers follow a similar framework. You’ll need your provider to submit documentation of your diagnosis, its severity, and the treatments you’ve already tried. If approved, your out-of-pocket cost drops to your plan’s copay or coinsurance for a specialist procedure.
If you’re paying out of pocket, ask the clinic whether they offer payment plans. Some also participate in the manufacturer’s savings programs, which can reduce costs for eligible patients.
What the Appointment Is Like
The whole visit takes about an hour. Your provider maps out a grid of injection points across each armpit, then uses a fine needle to deliver small doses of Botox just beneath the skin’s surface. Each armpit receives roughly 10 to 15 injections. The needles sting briefly but most people find it tolerable without numbing. Some providers offer a topical anesthetic or ice if you’re concerned about discomfort.
There’s no real downtime. You can go back to work or normal activities the same day, though most providers recommend avoiding intense exercise and hot baths for 24 hours.
How Quickly It Works and How Long It Lasts
You won’t notice a difference immediately. Sweat reduction typically kicks in within two weeks of treatment. Once it takes full effect, the results last between six and seven months for most people, though some report shorter or longer windows. When sweating gradually returns, you’ll need another session to maintain the results.
The way Botox reduces sweating is straightforward: it blocks the chemical signal (acetylcholine) that tells your sweat glands to activate. Without that signal, the glands in the treated area essentially go quiet. The effect isn’t permanent because your nerve endings gradually form new connections and resume signaling over the following months.
The Long-Term Cost Calculation
Because results fade, most people need two treatments per year. At $1,000 per session, that’s roughly $2,000 annually. Over five years, the total reaches $10,000 or more. This recurring cost is worth factoring into your decision, especially when comparing Botox to alternatives.
MiraDry, a microwave-based treatment, uses heat energy to permanently destroy sweat glands. It carries a higher upfront cost, often $2,000 to $3,000 per session, but most people need only one or two sessions total. Because the sweat glands don’t regenerate, the results are permanent. For someone planning to manage excessive sweating for years, miraDry can be cheaper in the long run despite the steeper initial price.
Prescription-strength antiperspirants containing aluminum chloride are the least expensive option, typically costing $10 to $30 per month. They’re also the first treatment most insurance plans require you to try before covering anything else. For mild to moderate sweating, they work well. For severe cases, they often fall short, which is what leads most people to explore Botox in the first place.
Who Is a Good Candidate
Botox for underarm sweating is approved for adults 18 and older with severe primary hyperhidrosis. “Primary” means the sweating isn’t caused by another medical condition or medication. The FDA approval is specific to the underarms; safety and effectiveness for other body areas (hands, feet, forehead) haven’t been formally established through the same regulatory process, though off-label use is common.
Good candidates are people whose sweating significantly disrupts daily life, who’ve tried clinical-strength antiperspirants without adequate relief, and who are comfortable with repeat treatments every six to seven months. If you’re looking for a one-time solution, a permanent option like miraDry may be a better fit. If you want to test the waters before committing to something permanent, Botox lets you try sweat reduction with a treatment that wears off on its own.