Underarm Sweating Treatment: Guide to Axillary Hyperhidrosis

Understanding Axillary Hyperhidrosis

Axillary hyperhidrosis — excessive underarm sweating — is the most common form of hyperhidrosis, affecting an estimated 1.4% of the US population (2.8% have hyperhidrosis overall, around half of it axillary). If you have been searching for an underarm sweating treatment that actually works, you are not alone. Tens of millions of people worldwide live with some form of hyperhidrosis, and the underarms are the number one affected area.

Underarm sweating becomes clinical when it exceeds what the body needs for thermoregulation. Soaking through shirts within minutes of putting them on, avoiding certain colours and fabrics, constantly pressing your arms against your sides to hide wet patches — these are the hallmarks of axillary hyperhidrosis, and they take a real toll on quality of life.

The good news is that more treatment options exist for underarm sweating than for any other form of hyperhidrosis. From over-the-counter antiperspirants to permanent medical procedures, this guide ranks every available option so you can make an informed decision about what is right for you.

All Underarm Sweating Treatments Ranked

Tier 1: First-Line Treatments

Clinical-Strength Antiperspirants

Effectiveness: Moderate | Cost: Low | Availability: Over-the-counter

Clinical-strength antiperspirants containing 10-20% aluminium chloride hexahydrate are the recommended starting point for axillary hyperhidrosis. They work by forming temporary plugs in the sweat duct openings, physically blocking sweat from reaching the skin surface.

How to use them effectively:

1. Apply at bedtime to completely dry underarms (moisture causes irritation and reduces efficacy)
2. Use a thin, even layer — more product does not mean more protection
3. Wash off in the morning and apply your regular deodorant if desired
4. Start with nightly application for 1-2 weeks, then reduce to 2-3 nights per week for maintenance
5. If irritation occurs, apply 1% hydrocortisone cream in the morning and reduce application frequency

Popular options include Certain Dri (12% aluminium chloride), Driclor and Anhydrol Forte (20% aluminium chloride) — both sold over the counter in UK pharmacies as P medicines, no prescription required — and SweatBlock wipes (14% aluminium chloride). Read our Certain Dri review and SweatBlock review, or visit our comprehensive guide to the best antiperspirants for detailed product comparisons. If you need maximum strength, see the strongest antiperspirants.

Best for: Mild to moderate axillary hyperhidrosis, or as a complement to other treatments.

Prescription Topical Glycopyrronium (Qbrexza)

Effectiveness: Moderate to high | Cost: Moderate (with insurance) | Availability: Prescription

Qbrexza medicated cloths are the only FDA-approved topical anticholinergic specifically for primary axillary hyperhidrosis. Each cloth contains glycopyrronium tosylate, which blocks the acetylcholine signals that trigger sweat production.

In the ATMOS-1 and ATMOS-2 clinical trials, Qbrexza reduced underarm sweating by an average of 2 points on the 4-point Hyperhidrosis Disease Severity Scale, with over 50% of patients achieving at least a 50% reduction in sweat production.

Pros: FDA-approved for this specific use, once-daily application, no aluminium Cons: Can cause dry mouth, blurred vision if transferred to eyes, and urinary hesitancy. Must wash hands thoroughly after application.

Tier 2: Medical Treatments

Botox (OnabotulinumtoxinA)

Effectiveness: High | Cost: High | Availability: In-office procedure

Botox is FDA-approved for severe primary axillary hyperhidrosis that has not responded to topical treatments. It works by blocking the release of acetylcholine at the nerve-sweat gland junction, effectively shutting down sweat production in the treated area.

What to expect:

• 50 units are injected per underarm (100 units total) in a grid pattern
• The procedure takes 15-20 minutes
• Results begin within 2-4 days, with full effect by 2 weeks
• Duration: 4-12 months (average 6-7 months)
• Cost: $1,000-$1,500 (about £744–1,116) per session before insurance

Trials report a substantial average reduction in underarm sweating, making it one of the more effective treatments available. Many insurance plans cover underarm Botox for hyperhidrosis after documenting failure of topical treatments. Read our complete Botox for sweating guide for insurance tips and provider recommendations.

Best for: Moderate to severe axillary hyperhidrosis when antiperspirants are insufficient.

miraDry

Effectiveness: Very high | Cost: Very high (upfront) | Availability: In-office procedure

miraDry is the only FDA-cleared device that permanently destroys underarm sweat glands using precisely controlled microwave energy. Because sweat glands do not regenerate, the results are lasting — most patients achieve a large reduction in underarm sweating after one to two sessions.

What to expect:

• Treatment takes about 1 hour per session
• Local anesthesia is administered to numb the underarms
• Most patients need 1-2 sessions spaced 3 months apart
• Downtime: 2-5 days of swelling, tenderness, and numbness
• Cost: $2,000-$3,500 (about £1,487–2,603) per session
• Results are permanent

miraDry also reduces underarm odour and hair, as the microwave energy affects odour-producing apocrine glands and some hair follicles. However, the upfront cost is significant, and insurance coverage varies. Visit our miraDry treatment guide for a full breakdown of what to expect.

Best for: Patients seeking a permanent solution who can afford the upfront investment.

Iontophoresis

Effectiveness: Moderate | Cost: Moderate | Availability: At-home device

While iontophoresis is most commonly associated with hands and feet, specialised underarm applicators are available for axillary use. The treatment passes a mild electrical current through water-soaked pads placed on the underarms, temporarily disrupting sweat gland function.

Underarm iontophoresis requires consistent use — typically 3-4 sessions per week during the initial phase, then 1-2 weekly maintenance sessions. Results are more modest for underarms than for palms and soles, with approximately 50-70% of patients reporting meaningful improvement.

Tier 3: Systemic and Surgical Options

Oral Medications

Effectiveness: Moderate to high | Cost: Low | Availability: Prescription

Oral anticholinergics work systemically to reduce sweating throughout the body. While effective, they affect all sweat glands (not just the underarms) and carry systemic side effects.

• Glycopyrrolate (Robinul): 1-2 mg, two to three times daily. The most commonly prescribed option
• Oxybutynin: 2.5-5 mg, twice daily. Available in extended-release form
• Propantheline: Less commonly used but another available option

Common side effects include dry mouth (the most frequent complaint), constipation, blurred vision, urinary retention, and heat intolerance (because sweating is reduced everywhere, the body's cooling capacity is diminished).

Best for: Patients with sweating in multiple body areas, or as an adjunct to localized treatments.

Endoscopic Thoracic Sympathectomy (ETS)

Effectiveness: Very high | Cost: High | Availability: Surgical procedure

ETS involves surgically cutting or clamping the sympathetic nerves that control underarm sweating. The procedure is performed under general anesthesia using small incisions and a camera (endoscope).

While ETS is highly effective at stopping underarm sweating, it carries a significant risk of compensatory sweating — heavy sweating that develops in other body areas (back, chest, groin, legs) after surgery. Compensatory sweating occurs in around 60% of patients (pooled estimate 62%, 95% CI 51–72%) and can sometimes be more severe than the original problem.

Due to this risk, ETS is generally considered a last resort for underarm hyperhidrosis, reserved for severe cases where all other treatments have failed. It is more commonly performed for palmar hyperhidrosis, where the risk-benefit ratio is more favorable.

Best for: Truly refractory cases after exhausting all other options. Extensive counseling about compensatory sweating risk is essential.

Tier 4: Emerging Treatments

Microwave and Radiofrequency Devices

Several newer energy-based devices are in various stages of development and approval for underarm sweating. These aim to replicate miraDry's success with potentially lower cost or fewer side effects.

Topical Sofpironium Bromide

Sofpironium bromide (Ecclock) is a topical anticholinergic approved in Japan for primary axillary hyperhidrosis. It is currently under investigation for use in other markets and may offer an alternative to Qbrexza in the future.

Building Your Treatment Plan

The most effective approach to underarm sweating treatment often combines multiple strategies:

For Mild Axillary Hyperhidrosis

1. Start with a clinical-strength antiperspirant (12-20% aluminium chloride)
2. Wear moisture-wicking undershirts
3. Choose sweat-hiding clothing (dark colours, patterns, breathable fabrics) — or use underarm sweat pads to protect shirts on lighter days
4. If antiperspirants are insufficient, ask your doctor about Qbrexza

For Moderate Axillary Hyperhidrosis

1. Try clinical-strength antiperspirant first
2. If inadequate, discuss Botox injections with a dermatologist
3. Supplement with oral medication if needed
4. Invest in sweat-proof undershirts for daily use

For Severe Axillary Hyperhidrosis

1. Discuss Botox or miraDry with a hyperhidrosis specialist
2. Consider oral anticholinergics for additional systemic control
3. Evaluate miraDry for a permanent solution
4. Reserve ETS as a last resort after thorough counseling

Daily Management Tips

Morning Routine

1. Shower with antibacterial soap to reduce odour-causing bacteria
2. Dry underarms completely — use a hair dryer on cool if needed
3. Apply regular deodorant (if using clinical antiperspirant at night)
4. Dress in layers starting with a sweat-proof undershirt — our Thompson Tee review explains how the waterproof underarm barrier stops sweat marks showing through

Throughout the Day

• Keep spare shirts or undershirts at work
• Use clinical-strength antiperspirant wipes for midday touch-ups
• Manage stress with breathing exercises before triggering situations
• Stay hydrated — dehydration does not reduce sweating but does increase odour

Evening Routine

1. Shower and dry underarms thoroughly
2. Wait 10-15 minutes for skin to cool completely
3. Apply clinical-strength antiperspirant
4. Do not apply deodorant on top of nighttime antiperspirant

Sources

• Strutton DR, et al. "US prevalence of hyperhidrosis and impact on individuals with axillary hyperhidrosis." Journal of the American Academy of Dermatology. 2004;51(2):241-248.
• Glaser DA, et al. "Topical glycopyrronium tosylate for the treatment of primary axillary hyperhidrosis: Results from the ATMOS-1 and ATMOS-2 phase 3 randomized controlled trials." Journal of the American Academy of Dermatology. 2019;80(1):128-138.
• Naumann M, Lowe NJ. "Botulinum toxin type A in treatment of bilateral primary axillary hyperhidrosis: Randomised, parallel group, double blind, placebo controlled trial." BMJ. 2001;323(7313):596-599.
• Hong HC, et al. "Microwave technology for treating axillary hyperhidrosis and bromhidrosis." Dermatologic Surgery. 2012;38(5):728-735.
• International Hyperhidrosis Society. "Treatments for Axillary Hyperhidrosis." SweatHelp.org.
• Nawrocki S, Cha J. "The etiology, diagnosis, and management of hyperhidrosis: A comprehensive review." Journal of the American Academy of Dermatology. 2019;81(3):657-666.