How Botox Works to Treat Hyperhidrosis

Introduction

Hyperhidrosis is the condition of excessive sweating that goes beyond what your body needs for cooling. Botox injections offer a reliable, minimally invasive solution by targeting the nerves that prompt sweat glands to overreact. At Bayswater Dental Clinic, we use precise techniques to reduce unwanted sweating with confidence and care. To book your personalized consultation, call 020 7229 4627 or email info@bayswaterdental.co.uk to schedule a consultation.

Benefits

Dramatic reduction of sweating in treated areas
Acts locally—targets specific zones (underarms, palms, feet, face)
Non-surgical, outpatient procedure
Fast onset of effect (often within days)
Safe when administered by trained professionals
Offers improved confidence and comfort in daily life

Treatment Process

The degree of improvement depends on several variables:

Assessment & mapping
We begin by assessing the areas most affected and marking the precise locations for injection. If needed, we apply a mild starch-iodine test to highlight active sweat zones.
Preparation & cleaning
Skin is cleaned and disinfected to prevent infection. A topical numbing cream may be applied to reduce discomfort during injection.
Injection delivery
Using very fine needles, Botox (botulinum toxin type A) is injected into the superficial layer of skin in a grid or pattern over the treatment zone. Each small injection interrupts the neural signal to sweat glands.
Diffusion period
After injection, Botox begins to block nerve signals. The sweat glands in the treated area become temporarily “switched off” or significantly reduced in activity.
Observation & follow-up
We monitor you briefly to confirm no immediate adverse reaction, explain post-treatment care, and schedule a follow-up to assess efficacy and adjusments if needed.

The full session usually takes 20 to 45 minutes, depending on the size and number of zones treated.

Cost

To get a precise quote for Botox as hyperhidrosis treatment, please call the clinic. Pricing depends on the size of the area, number of injections, and individual needs.

Aftercare

Avoid rubbing or applying pressure to the treated areas for 24 hours
Skip vigorous exercise, sauna or heat for 24–48 hours
Keep the area dry and clean (no heavy perspiration or wetness)
Mild discomfort, swelling, or redness is normal and often fades in a day or two
Contact us if you experience unusual weakness in muscles, sudden asymmetry, or signs of infection

Suitability

You may be a good candidate if you:

Suffer from focal excessive sweating
Have good general health
Are looking for non-surgical relief

You may not be suitable if you:

Are pregnant or breastfeeding
Have neuromuscular disease
Are on medications incompatible with Botox
Have infection or skin conditions at injection sites

During your consultation, we review your health background and suitability in detail.

Alternatives & Complementary Options

Topical prescription antiperspirants
Iontophoresis (electrical treatment, especially for palms/feet)
Systemic medications (oral anticholinergics)
MiraDry or energy-based devices (for sweat gland destruction)
Surgical options (sympathectomy)

Often, combining methods (e.g. Botox plus topical) offers better control based on severity.

Frequently Asked Questions

How quickly does it work?

You may notice a reduction in sweating within 2–7 days, with full effect by around day 14.
How long does the effect last?

Typically 4 to 6 months. Many patients return for repeat sessions to maintain benefits.
Is Botox safe for this use?

Yes—when properly administered by qualified clinicians. The toxin acts locally and minimally spreads.
Will it “stop” sweating entirely?

No — it reduces excess sweating in treated zones, not basal sweating necessary for thermoregulation.
Does it hurt?

Discomfort is mild. We use numbing techniques to make injections tolerable.
Can it be reversed if needed?

There is no reversal per se; effects wear off naturally over time.