Excessive Underarm Sweating
By Dr Amber Halliday, MRCGP MBBS BSc (Hons) | GP & Aesthetic Practitioner | Blue Bird Aesthetics, Worthing | Last reviewed: July 2026
Who Is This For?
- ✓ You sweat excessively from the underarms regardless of temperature or activity
- ✓ Conventional antiperspirants have not provided adequate control
- ✓ Your sweating affects clothing choices, confidence or professional life
- ✓ You would like a long-lasting medically delivered solution
- ✗ Secondary hyperhidrosis from medication, thyroid disease or other medical cause — the underlying cause needs addressing first
- ✗ You are pregnant or breastfeeding
Looking for pricing and booking? Visit our underarm sweating treatment treatment page
In Short
- Botulinum toxin blocks nerve signals to sweat glands — significantly reducing sweat production.
- Results typically last 6-12 months — much longer than the 3-4 months typical of cosmetic facial applications.
- The treatment is prescription-only and requires a clinical consultation including medical history review.
- For many patients this is genuinely life-improving.
What Is Hyperhidrosis?
Primary hyperhidrosis is a condition in which the sweat glands produce significantly more sweat than is needed for temperature regulation — often regardless of temperature, exercise or anxiety. It is more common than most people realise, frequently undertreated, and carries a significant psychological and social impact.
The Treatment
Botulinum toxin is injected superficially across the treatment area, blocking nerve signals to the sweat glands. Results begin within 1-2 weeks and last 6-12 months.
Pricing
- Underarm hyperhidrosis — 275 pounds
- Treatment page
Your Treatment Pathway
Consultation — medical history and diagnosis confirmation→Confirm primary rather than secondary hyperhidrosis→Treatment mapped to sweat-active area→Botulinum toxin administered→Results visible within 1-2 weeks→Maintenance at 6-12 months
Frequently Asked Questions
How long do results last?
6-12 months is typical — considerably longer than cosmetic anti-wrinkle facial applications. Most patients find a single annual treatment sufficient.
Is the treatment painful?
The injections are superficial and cover a larger area than facial treatments. Most patients find it very manageable — tolerable rather than painful.
Does treating underarms affect my ability to sweat elsewhere?
No. The treatment is localised to the treated area. The body continues to regulate temperature normally through sweat glands elsewhere.
How do I know if I have hyperhidrosis or just normal sweating?
If your sweating is significantly more than others in the same conditions, interferes with daily life or clothing choices, and standard antiperspirants have been ineffective, these are strong indicators. A consultation confirms the diagnosis and rules out secondary causes.
Does it work on palms or feet?
Botulinum toxin can be used for palmar and plantar hyperhidrosis though these areas are more complex to treat. Discuss at consultation.
Related Concerns
Skin concerns often overlap. You may also find these pages helpful:
- Fine Lines — anti-wrinkle injections treat both cosmetic lines and hyperhidrosis via the same mechanism
- Jawline and Lower Face — masseter treatment uses the same mechanism for jaw clenching
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Further Reading – Dr Halliday’s Clinical Guides
Book a consultation with Dr Amber Halliday
One-hour medical consultation, no obligation to proceed.
Blue Bird Aesthetics
Doctor‑led medical aesthetics clinic in Worthing, West Sussex. Focused on enhancing natural beauty, improving overall skin quality and adhering to clinically safe treatment pathways.
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