Hyperhidrosis, or excessive sweating, is a condition that affects millions of Canadians, often leading to social anxiety, ruined clothing, and a constant search for high-strength antiperspirants. In the bustling urban centers of Toronto and Montreal, more people are turning to Botox not just for its ability to smooth wrinkles and fine lines, but as a life-changing medical treatment for the underarms. While Botox is a household name for treating crow’s feet, forehead lines, and frown lines, its application in the axillary region is one of the most effective non-surgical procedures available today.
If you have ever felt limited by your skin condition or frustrated by the lack of results from clinical-grade deodorants, understanding the science, the treatment plan, and the financial investment involved in hyperhidrosis injections is the first step toward a more comfortable life. In this guide, we will explore everything from Botulinum toxin science to the specific costs you can expect at a cosmetic surgery clinic in Canada.
What is Botox for Hyperhidrosis?

Botox is a brand name for a neurotoxin produced by the bacterium Clostridium botulinum. In the world of aesthetic medicine, it is categorized under neuromodulators (which also includes Dysport). While many seek this product for facial rejuvenation and the reduction of dynamic wrinkles, its medical utility extends to chronic migraines, TMJ Disorders, Bruxism, and Muscle spasms.
How It Works
The primary function of Botulinum toxin is to block nerve signals. When used for wrinkle reduction on the forehead, it prevents muscle contraction of the facial muscles. However, when injected into the underarms, it blocks the chemical signals that stimulate the sweat glands. By temporarily “turning off” these glands, the injection treatment provides a significant reduction in moisture.
The Cost of Underarm Botox in Toronto and Montreal
The cost of Botox for underarms is significantly higher than a standard cosmetic treatment for glabellar lines or bunny lines. This is primarily because the area requires a much larger volume of the product.
1. Cost per Unit vs. Flat Fee
Most clinics in Etobicoke, Toronto, and Montreal charge by the units used. For underarms, a typical treatment requires 100 units (50 per side).
- Average Price per Unit: $10 – $17
- Total Estimated Cost: $1,000 – $1,500 per session.
Some providers, might offer a flat-rate treatment plan for medical hyperhidrosis cases.
2. Insurance and Health Canada
Unlike cosmetic treatments for lip lines or jawline definition, Botox hyperhidrosis is often covered by private insurance in Canada. Since it is a Health Canada approved medical treatment, your insurance may cover the cost of the product itself, leaving you to pay only the “injection fee” to the medical professional or dermatologist.
The Procedure: What to Expect at the Clinic

A typical session starts with a thorough review of your medical history. Your medical injectable experts will identify the injection sites where sweating is most concentrated.
Step-by-Step Injection Procedure
- Consultation: A dermatologist or cosmetic surgeon assesses your facial structure and body needs.
- Preparation: The injection site is cleaned. Unlike a Vampire Facelift or micro-needling, which might require a blood draw, this is a direct minimally invasive procedure.
- Injections: Using specialized injection techniques, the provider administers small units of Botox just under the skin.
- Post-Care: You are advised to avoid blood thinning medications, NSAIDs, and Warfarin to prevent bruising. Always apply sunscreen if the treated area (like the forehead or neck lines) is exposed, though this is less of a concern for underarms.
Beyond the Underarms: Versatility of Neuromodulators
The world of injectables is vast. While you might visit a clinic for underarm sweat, many patients opt for combination treatments.
Facial Rejuvenation
- Upper Face: Treating forehead lines, crow’s feet, and glabellar lines to achieve a rejuvenated appearance.
- Lower Face: Addressing the masseter muscle for jawline definition or treating a gummy smile. Lip botox (often called Botox Levre Montreal) can help with lip lines and flipping the lip for a fuller look without dermal fillers.
- Neck: Injecting the platysma muscle to reduce neck lines.
Medical Applications
- Botox for Migraines: Targets nerve signals around the head to reduce the frequency of a migraine.
- TMJ and Bruxism: Relaxing the masseter muscles to alleviate muscle tension and tooth grinding.
- Blepharospasm: Treating involuntary eyelid twitching involving the orbicularis oculi.
Comparing Botox to Other Aesthetic Procedures
In a cosmetic surgery clinic, you will encounter various filling agents and technologies. It is important to distinguish between them:
- Hyaluronic Acid Fillers: Brands like Stylage, Revanesse, and Juvéderm are hyaluronic acid fillers used to add volume. They are filling agents, unlike Botox, which relaxes muscles.
- Biostimulators: These products encourage collagen production and collagen regeneration over time.
- Lasers and IPL Photofacial: Used for skin texture and skin rejuvenation, targeting pigment and acne treatments.
- Platelet-Rich Plasma (PRP): Uses your own blood components and growth factors for tissue regeneration.
- Body Contouring: Unlike the precision of Botox, body contouring targets fat cells or breast shape.
Choosing a Provider in Canada

Whether you are looking at Montreal Botox Clinics or seeking Beauty Aesthetics Toronto, your choice of medical professional is paramount.
Reputation and Reviews
Don’t just rely on advertising. Check ProvenExpert, customer reviews, and online reviews. A high reputation for customer service and safety and sterility is more important than the lowest price. Many clinics emphasize a customized treatment plan.
Myth vs. Reality
A common Myth vs. Reality concern is that Botox will make you look “frozen.” In reality, when performed by medical injectable experts, the result is a natural-looking rejuvenation. You will still have facial expressions, just without the deep expression lines.
Safety, Side Effects, and Contraindications
While Botox is safe, it is still dermatologic surgery. Potential side effects at the injection site include:
- Temporary facial asymmetry (if treating the face).
- Localized muscle spasms.
- Minor bruising (avoiding NSAIDs and Warfarin helps).
It is vital that the injection treatment is performed using proper laser devices (if combined with other therapies) and adheres to safety and sterility protocols. Always follow the Before and After instructions provided by your dermatologist.
Conclusion: Is the Investment Worth It?
The cost of Botox for underarms in Toronto and Montreal is an investment in your quality of life. For those suffering from hyperhidrosis, the price of 100 units is a small trade-off for the ability to wear any fabric, attend any meeting, and move through the world without the burden of excessive sweat.
When you visit a cosmetic surgery clinic, remember that you aren’t just buying a product; you are paying for the expertise of a medical professional who understands facial structure, muscle contraction, and tissue regeneration. Whether you are also interested in Chemical Peels, Laser Hair Removal, or Hyaluronic acid for Lip Fillers, a comprehensive treatment plan will ensure you leave feeling like a rejuvenated appearance has been achieved.
From Etobicoke to the heart of Montreal, Canada offers some of the best aesthetic medicine in the world. Take your time, read the personal recommendations, and choose a clinic with a stellar reputation. Your journey toward a sweat-free life and a rejuvenated you starts with a single consultation.






