Hyperhidrosis Treatment in Barcelona: Botulinum Toxin at Santé Clinics

Hyperhidrosis Treatment in Barcelona: A Definitive Guide to Stopping Excessive Sweating

Hyperhidrosis — clinically excessive, uncontrollable sweating — is far more common than most patients realise, affecting an estimated 3% of the adult population. It is not a hygiene problem and it does not respond to ordinary antiperspirants. It is a neurological miscommunication: the sympathetic nervous system over-stimulates eccrine sweat glands, producing two to four times the volume of sweat the body actually needs to regulate temperature.

For thousands of patients in Barcelona and across Spain, botulinum toxin (Botox / Azzalure / Dysport) has become the gold-standard medical solution: a 20-minute injectable procedure that suppresses sweat production for 6 to 9 months with zero downtime.

At Santé Clinics, on Avenida Diagonal 384, our board-certified medical team has treated thousands of hyperhidrosis cases — underarms, palms, soles, scalp, and forehead — with consistent, life-changing results.

What Is Hyperhidrosis?

Hyperhidrosis is excessive sweating beyond what the body needs to regulate temperature. It is divided into two categories:

• Primary focal hyperhidrosis — idiopathic (no identifiable cause), typically affects specific areas symmetrically (both underarms, both palms, both soles), often begins in adolescence, and frequently runs in families. This is the most common form and the one botulinum toxin treats most effectively.
• Secondary generalised hyperhidrosis — caused by an underlying condition (thyroid disease, menopause, diabetes, certain medications, infections). Treatment requires identifying and addressing the root cause; botulinum toxin can still be used adjunctively.

The diagnostic threshold for primary hyperhidrosis includes: focal, visible sweating for at least 6 months, with at least two of the following — bilateral and symmetric, impairs daily activities, frequency of at least once per week, onset before age 25, family history, or absence of sweating during sleep.

How Botulinum Toxin Stops Excessive Sweating

Sweat glands receive their “fire” signal from sympathetic nerve endings via the neurotransmitter acetylcholine. Botulinum toxin type A blocks the release of acetylcholine at the nerve-gland junction. The gland is structurally intact but receives no signal, so it produces no sweat in the treated zone.

Effects begin within 2 to 7 days, peak at around 2 weeks, and last between 6 and 9 months for most patients. When the body grows new nerve terminals, the signal returns, sweating gradually restarts, and a maintenance treatment is performed.

This is the same active molecule used in cosmetic Botox — the difference is the dosing pattern, depth, and grid distribution across a defined treatment area, which requires specific medical training to perform correctly.

Treatment Areas and Indications

At Santé Clinics, we treat the four most common hyperhidrosis zones:

Underarms (Axillary Hyperhidrosis)

The most frequently treated area and the one with the highest success rate (90 to 95% of patients report a significant reduction). Typical dosing is 50 units of Botox or 125 units of Azzalure per underarm, distributed across a grid of 15 to 20 micro-injections. Effect duration: 6 to 9 months.

Hands (Palmar Hyperhidrosis)

The second most-treated area. Sweaty palms can disrupt professional life (handshakes, holding documents, electronics), social interactions, and even simple tasks like writing or driving. Treatment requires more units (100 per palm typically) and may include nerve block anaesthesia or vibration anaesthetic devices for comfort. Effect duration: 4 to 6 months.

Feet (Plantar Hyperhidrosis)

Plantar treatment is highly effective but requires careful dosing because the skin is thicker. Typical dosing: 100 units per sole. Local anaesthetic cream is used. Effect duration: 4 to 6 months.

Face, Forehead, Scalp (Craniofacial Hyperhidrosis)

Forehead and scalp sweating — often a deal-breaker in professional settings, public speaking, or under hot lights — responds extremely well. Lower doses are used (15 to 25 units across the forehead) to avoid affecting brow position. The frontalis muscle must be respected. This requires an experienced injector.

The Procedure at Santé Clinics

Free Consultation

Your aesthetic doctor confirms diagnosis, rules out secondary causes, identifies the affected zone(s), and reviews medication and medical history. We perform the Minor’s iodine-starch test when needed — iodine plus starch turns purple-black where active sweat is produced, mapping the exact zone to inject and avoiding wasted units.

The Injection Session

The treatment area is cleansed and a topical anaesthetic is applied. Using an ultra-fine 30G insulin needle, the doctor performs a precise grid of intradermal micro-injections (typically 15 to 30 punctures per zone). Each injection deposits a small amount of toxin in the skin layer where sweat glands sit.

Total chair time: 15 to 25 minutes for underarms or hands. No general anaesthesia. No incisions. You walk out and resume normal activities the same day.

Aftercare

• Avoid intense exercise, saunas, and hot baths for 24 hours
• Avoid massaging or applying pressure to the treated area for 24 hours
• Mild redness or pinpoint marks resolve within hours
• A complimentary follow-up appointment is included two weeks post-treatment

Pricing

The price is determined by the number of toxin units required, which depends on the treated area and the severity of the condition.

Treatment	Price
1 unit of Toxin (e.g. one underarm, focal area)	450 €
2 units of Toxin (e.g. both underarms, both palms)	800 €
Free aesthetic consultation	0 €
2-week follow-up appointment	Included

Pricing is transparent — no hidden fees. Financing options and gift cards are available.

Indications and Contraindications

Ideal Candidate

• Adults aged 18+ with focal primary hyperhidrosis affecting daily life
• Those who have failed clinical-strength antiperspirants (aluminium chloride 20%)
• Those who do not want the systemic side effects of oral anticholinergics
• Those who do not want surgery (sympathectomy)

Absolute Contraindications

• Pregnancy or breastfeeding
• Known hypersensitivity to botulinum toxin or formulation excipients
• Active infection at the injection site
• Neuromuscular disorders (myasthenia gravis, Lambert-Eaton, ALS)

Relative Contraindications

• Concurrent use of aminoglycoside antibiotics (potentiates effect)
• Coagulopathies or anticoagulant therapy (manage bruising risk)
• Recent vaccination (wait 1 to 2 weeks)

What to Expect: Realistic Outcomes

Most patients describe the result as liberating. Common feedback: ability to wear silk and silver-grey shirts again, dropping the daily multiple T-shirt change, shaking hands without preparation, holding a phone or pen without slipping, no more sweat marks on paperwork. The reduction is typically 80 to 95%, not 100% — the body still sweats elsewhere for thermoregulation, and a small residual is expected and normal.

Important to know: botulinum toxin does not cure hyperhidrosis. It is a maintenance treatment, repeated every 6 to 9 months for axillae and 4 to 6 months for hands and feet. Most patients budget for 2 sessions per year.

Frequently Asked Questions

Will sweating just shift to other areas of my body?

This is a common concern but rarely an issue clinically. Compensatory hyperhidrosis is well-documented after surgical sympathectomy, but with focal botulinum toxin treatment it is uncommon and, when it occurs, is usually mild and transient.

Does the treatment hurt?

Underarm injections feel like quick pinches and most patients describe them as easily tolerable. Hands and feet are more sensitive — at Santé Clinics we apply topical anaesthetic, use vibration distraction, and in some cases offer median nerve blocks for palms. Most patients rate discomfort 3 to 4 out of 10 for hands.

How soon will I notice results?

You will start to notice reduced sweating around days 3 to 5. Maximum effect is at 2 weeks. We schedule a complimentary follow-up at 2 weeks to assess and touch up if needed.

Is botulinum toxin safe for hyperhidrosis?

Yes. The treatment has been FDA- and EMA-approved for axillary hyperhidrosis since 2004 and is supported by decades of clinical data. Side effects are localised and transient: mild bruising, pinpoint redness, and rarely temporary muscle weakness adjacent to palmar injections (resolves within weeks).

Why is the treatment 450 € for one unit and 800 € for two — what is a “unit” in this pricing?

In our pricing structure, “1 unit” refers to one anatomical zone (for example one underarm or one palm). “2 units” refers to two zones (both underarms, or both palms, or one underarm + one palm). This is different from the medical “unit” of botulinum toxin (a measure of biological activity). Your doctor will explain exactly how many medical units of toxin will be used in your specific case.

Can I combine hyperhidrosis treatment with cosmetic Botox?

Yes — and many patients do. The same active molecule treats different areas in the same session. Your doctor will plan the total dose and budget the sessions accordingly.

Book Your Free Hyperhidrosis Consultation in Barcelona

Excessive sweating is a medical condition, not a personality trait or a hygiene failure — and it is highly treatable. At Santé Clinics, your journey begins with a free consultation where our specialists confirm the diagnosis, identify the affected zones, and design a personalised treatment plan.

Contact us: - WhatsApp: +34 699 14 58 87 - Visit: clinics.sante.co - Address: Avenida Diagonal 384, 08037 Barcelona, Spain - Hours: Mon-Fri 9:00-21:00, Sat-Sun 10:00-20:00

Reclaim your confidence. Book your free hyperhidrosis consultation at Santé Clinics today.