Managing Hyperhidrosis — Botox and Beyond

Last updated: 5 March 2026

Hyperhidrosis, excessive sweating beyond what is needed for thermoregulation, affects approximately 3-5 percent of the population. Many sufferers wait years before seeking treatment. This guide explores the full spectrum of evidence-based treatments from topical solutions to botulinum toxin and emerging technologies.

Reviewed by the Axiom Aesthetics Clinical Team | Last updated: February 2026

Understanding Hyperhidrosis

Primary hyperhidrosis affects specific areas such as axillae, palms, soles, and face, usually beginning in childhood or adolescence from sympathetic nervous system overactivity. Secondary hyperhidrosis is caused by underlying medical conditions or medications and tends to be more generalised. The impact on quality of life is substantial, affecting social interactions, career choices, clothing decisions, and relationships. The Hyperhidrosis Disease Severity Scale helps clinicians quantify impact.

First-Line Treatments: Topical and Oral Options

Clinical-Strength Antiperspirants

Aluminium chloride hexahydrate (20-25 percent) remains the standard first-line treatment. Products such as Driclor form temporary sweat duct plugs when applied to dry skin at bedtime. Common side effects include irritation and contact dermatitis, mitigated by ensuring completely dry skin and gradually increasing frequency from once weekly to nightly.

Oral Medications

Anticholinergic medications such as glycopyrrolate and oxybutynin reduce sweating systemically by blocking acetylcholine at sweat gland receptors. Systemic side effects include dry mouth, blurred vision, constipation, and cognitive effects. Newer topical glycopyrronium formulations aim to deliver local effects with fewer systemic issues.

Botulinum Toxin: The Gold Standard

Mechanism and Evidence

Botulinum toxin type A blocks acetylcholine release from sympathetic nerve fibres innervating eccrine sweat glands. When injected intradermally, it effectively switches off sweat glands for 4-12 months. A Cochrane review of 20 randomised controlled trials confirmed significant reduction versus placebo, with a number needed to treat of approximately 2.

Axillary Treatment Protocol

The standard protocol involves the Minor iodine-starch test to identify sweating areas, marking injection sites in a grid at 1-2cm intervals, and injecting 2-4 units per site intradermally. Total dose per axilla is typically 50-100 units. The procedure takes 20-30 minutes with results beginning within 2-7 days and lasting 6-12 months. Repeat treatments often become more effective over time.

Palmar and Plantar Treatment

Treating palms and soles is highly effective but challenging due to dense sensory nerve endings. Pain management techniques include nerve blocks, ice anaesthesia, vibration devices, and nitrous oxide sedation. There is a small risk of temporary hand weakness resolving within 2-4 weeks.

Device-Based Treatments

Iontophoresis

Low electrical current through water reduces sweat gland activity, most effective for palmar and plantar hyperhidrosis with 80-90 percent efficacy. Sessions last 20-30 minutes, daily initially for 1-2 weeks then 1-3 times weekly for maintenance. Home devices are available on prescription.

miraDry Microwave Thermolysis

miraDry uses microwave energy to permanently destroy eccrine and apocrine sweat glands, achieving 60-80 percent reduction after 1-2 treatments. It also reduces underarm hair and odour. Currently validated only for axillary use. Downtime includes swelling and tenderness for 1-3 weeks.

Radiofrequency Microneedling

Morpheus8 and Secret RF deliver radiofrequency energy at precise depths to thermally damage sweat glands. Early studies show 50-70 percent reduction, though long-term data is still limited compared to established treatments.

Surgical Options

Endoscopic thoracic sympathectomy interrupts the sympathetic nerve chain with over 95 percent success for palmar hyperhidrosis. However, compensatory sweating in other body areas occurs in 30-80 percent of patients and can be worse than the original problem. ETS is generally considered a last resort when all other treatments have failed.

Our Treatment Approach

At Axiom Aesthetics, we use a stepped approach beginning with least invasive options. Every patient receives thorough medical history review to exclude secondary causes including thyroid disorders, diabetes, menopause, anxiety disorders, and medications. We collaborate with dermatologists and endocrinologists when secondary hyperhidrosis is suspected.

Frequently Asked Questions