Quick Answer
Axillary hyperhidrosis is a medical condition characterized by excessive underarm sweating beyond what the body needs for temperature regulation. It affects people of any age or skin type whose sweating significantly disrupts daily life or clothing choices. Treatment uses targeted injections of botulinum toxin to temporarily block the nerve signals that activate sweat glands. At ID Cosmetic Clinic in Markham and Toronto, this treatment is personally performed by physician Dr. Dan Xu, M.D., CCFP. Most patients see results within one to two weeks, with effects typically lasting four to six months per session.
View Contents (14)
- 01 What Is Axillary …
- 02 Causes and Mechan…
- 03 Primary hyperhidr…
- 04 Treatment conside…
- 05 Axillary Hyperhid…
- 06 Dr. Xu’s 6-…
- 07 Botox Axillary Hy…
- 08 Am I a Candidate …
- 09 Why a MedSpa̵…
- 10 Dr. Dan Xu, M.D.,…
- 11 《Timeless Asian B…
- 12 Why Trust ID Cosm…
- 13 About the Cost of…
- 14 Common Risks · Co…
What Is Axillary Hyperhidrosis?
Axillary HyperhidrosisRefers to localized axillary sweat production that exceedsRequired for physiological thermoregulation, is Primary focal hyperhidrosis (PFH)The most common type. Affecting approximately 2–3% of the population, its impact is significant yet widely underestimated — most patients are unaware that this is a medical condition that can be treated or controlled.
5 Key Differences Between Primary and Secondary Hyperhidrosis
Age of onset — typically around puberty
Approximately 90% of primary hyperhidrosis cases develop before or during puberty, with patients often feeling”You sweat excessively”. Secondary hyperhidrosis typically appears suddenly in adulthood and warrants investigation for systemic disease.
Symmetric distribution — equal on both sides
Typical presentation of primary hyperhidrosisBilateral symmetry(Both underarms, both hands, both feet, etc. Unilateral or generalized hyperhidrosis requires investigation for neurological, endocrine, or medication-related causes.
Stops at night — does not affect sleep
The hallmark features of primary hyperhidrosis are“Stops at night” — No sweating occurs during sleep. If night sweats are significant, secondary causes such as infection, malignancy, or hormonal imbalance should be investigated.
Positive family history — 30–50% have a familial predisposition
Approximately half of patients have a positive family history (a parent or sibling with the same condition), suggestingAutosomal dominant inheritance. However, the absence of a family history does not rule out primary hyperhidrosis.
Triggers — emotions, temperature, and food can all worsen the condition
Primary hyperhidrosisStress, heat, caffeine, spicy foodsignificantly worsens under these triggers, affecting both social interactions and work performance. Following Botox® treatment, the impact of these triggers is markedly reduced.
Severity Assessment (HDSS Scale)
- Grade 1:Sweating is barely noticeable and does not affect daily activities
- Grade 2:Sweating is noticeable and occasionally interferes with daily activities
- Grade 3:Sweating is almost constantly visible and frequently interferes with daily activities
- Grade 4:Sweating is severe and consistently interferes with daily activities
HDSS 3 Grade and above is consideredClinically significant hyperhidrosis,Botox Treatment has clear indications.
3 Major common lifestyle impacts
Clothing stains
White or light-colored shirts are perpetually stained under the arms, even with sweat pads. Many patients have worn only dark-colored clothing for years as a result.
Social anxiety
Afraid to raise your arms, afraid to hug, afraid to interview. Sweating → anxiety → more sweating: a vicious cycle.
Professional impact
Professions such as sales, consulting, public speaking, and performing are significantly affected. Important meetings, weddings, and major occasions frequently become sources of anxiety.
5 Step-by-step self-assessment
- Are you currentlyWhen not hot or stressedStill sweating continuously?
- Whether sweatingBilateral symmetry?
- Nighttime sleepDoes it stop sweating entirely?
- Whether you areAround pubertydoes sweating begin?
- Whether it affectsClothing choices, social life, work?
3 or more items”yes”,You may be a strong candidate for Botox treatment of primary axillary hyperhidrosis. During your consultation, Dr. Xu will perform the Minor starch-iodine test for precise sweat zone mapping.
Causes and Mechanisms of Axillary Hyperhidrosis
The underlying mechanism of primary axillary hyperhidrosis isExcessive sympathetic cholinergic signalingEccrine glands — not an abnormal number of sweat glands — are the source of the problem. Understanding this is key to understanding why Botox® is the most effective treatment.
Genetic factors
30–50% Patients frequently report a positive family history, suggesting an autosomal dominant inheritance pattern. The specific genes have not yet been fully identified, but the condition is associated with dysregulation of sympathetic nervous system activity.
Sympathetic overactivation
Under normal conditions, sweating is regulated by the hypothalamic thermoregulatory center via cholinergic sympathetic nerve fibers that control the sweat glands. In patients with primary hyperhidrosis,This regulatory system overreacts to stimuli.
Emotional triggers (sympathetic activation)
Stress, anxiety, and social situations activate the sympathetic nervous system → increased sweating → heightened anxiety → a vicious cycle. This is why many patients”The more anxious, the more you sweat”.
Temperature and food triggers
Hot environments, hot beverages, spicy food, caffeine, and alcohol can all worsen sweating. These are everyday triggers that are difficult to avoid entirely.
Secondary causes (conditions to rule out)
If sweating isSudden onset, unilateral, generalized, prominent at night, accompanied by weight loss,Underlying causes to rule out include: hyperthyroidism, diabetes, lymphoma, infection, pheochromocytoma, medications (antidepressants, hormones), and menopause, among others.
Primary hyperhidrosis vs. secondary / anxiety-related / bromhidrosis
Not all”Excessive sweating”Not everyone is an immediate candidate for Botox® — it is essential to confirm whether the condition is primary and whether any co-existing issues are present before proceeding.
vs Secondary hyperhidrosis
| Onset | Sudden onset in adulthood |
| Distribution | Generalized or unilateral |
| nighttime | Often prominent (night sweats) |
| Assessment | Rule out systemic disease first |
| Treatment | Primary disease treatment is the priority |
vs Anxiety-induced sweating
| trigger | Purely psychologically triggered |
| Relief | After relaxation / anxiety management |
| Distribution | Often affects multiple areas |
| Assessment | Psychological assessment |
| treatment plan | Botox + Combined with psychological therapy |
vs Axillary bromhidrosis
| fundamentally | Apocrine glands + bacteria |
| Chief complaint | Primarily odor-related |
| sweating | not necessarily significantly increased |
| treatment plan | Botox Partially effective + hygiene improvement |
| Alternative | miraDry / Surgical |
vs Localized irritant-triggered sweating
| fundamentally | Irritation from shaving / antiperspirant use |
| Onset | Recent exposure to a new product |
| Distribution | Stimulation zone only |
| treatment plan | Remove trigger + restore skin barrier |
| no need for | Botox |
Treatment considerations for axillary hyperhidrosis in Asian patients
Treatment of axillary hyperhidrosis in Asian patients differs slightly from Western populations in terms of dosage, social context, and co-existing concerns — however, the overall treatment protocol remains consistent.
1. A combination of axillary bromhidrosis and hyperhidrosis is common
Asian patients, particularly those of Chinese heritage, tend to have less active apocrine glands compared to European, North American, or Middle Eastern populations; however, a significant proportion of patientsat the same timeExcessive underarm sweating (eccrine gland overactivity) and underarm odor (apocrine glands) are distinct concerns. Botox® primarily treats hyperhidrosis; its effect on odor is limited.
2. High professional appearance demands
In Asian urban professional environments — particularly finance, consulting, sales, and healthcare —Frequently wearing formal attire,Stained white shirts and ruined silk blouses are all too familiar. Excessive underarm sweating can significantly impact your professional image — making effective treatment a pressing priority.
3. Weddings / important occasions
Asian weddings typicallyWhite wedding dress + extended toasting,Any underarm dampness is”Wedding nightmare”. Dr. Xu has extensive clinical experience with preventive treatments scheduled 6 weeks before weddings.
4. Personalized dosage
Asian patients tend to have a smaller overall body frame, but dosing for axillary hyperhidrosis is primarily determined byUnderarm zoneDosage is determined by clinical assessment, not body weight. Dr. Xu uses Minor’s test to precisely map the treatment area and tailor the dose, typically 50–100 units per side.
Dosage reference × severity
| HDSS | Sweating area | Dosage per side |
|---|---|---|
| Grade 2 | < 5×5cm | 30–40 units |
| Grade 3 | 5–8cm | 40–50 units |
| Grade 3–4 | 8–12cm | 50–75 units |
| Grade 4 | > 12cm | 75–100 units |
Axillary hyperhidrosis is one of the Botox® clinical applications in which“Most rewarding”one of the procedures — It delivers direct, meaningful, and reproducible improvements to patients’ quality of life. Many patients tell me after treatment:””If I had known it was this straightforward, I never should have suffered through 10 years of this.”” As an Allergan/Juvéderm North America Trainer, axillary hyperhidrosis with Botox® is one of the standard cases I teach to other physicians. — Dr. Dan Xu, M.D., CCFP
Maintenance frequency reference
- Most patients return every 5–7 months
- Severe cases may last 4–5 months
- Mild cases and cooler seasons may extend results to 9 months
- For best results, treat 4–6 weeks before summer
Axillary Hyperhidrosis Treatment Options (Botox® is the Gold Standard)
FDA Botox® (onabotulinumtoxinA) has been approved for axillary hyperhidrosis for over 20 years, with a clinical efficacy rate exceeding 90%, making itMost effective, safest, and longest-lastingnon-surgical treatment.
Botox® Underarm injection Gold standard
Health Canada–licensed for axillary hyperhidrosis since 2004, with a clinical efficacy rate of 90%+. As an Allergan/Juvéderm North America Trainer, Dr. Xu’s expertise in Botox® injections for axillary hyperhidrosisPrecise grid mapping + personalized dosageis one of his signature procedures.
- 50–100 units per side (based on treatment area)
- 1–1.5cm Grid pattern · 25–50 multi-point injections
- 4–7 Days to onset · full effect at 2 weeks
- Results last 5–9 months
- Minimal downtime · Return to work the same day
Minor Starch-iodine test Essential for diagnosis
The gold standard for diagnosis and mapping: iodine solution is applied to the underarm, allowed to dry, then starch is dusted over — active sweat zones turn dark purple-black, precisely identifying the treatment area and guiding Botox injection point design.30 Minutes to complete · safe and comfortable.
Topical anesthesia + ice application Comfort optimization
Topical lidocaine applied 20 minutes before injection, combined with ice packing, significantly reduces discomfort during multi-point injections. Both are standard components of Dr. Xu’s protocol to ensure a comfortable treatment experience.
Prescription antiperspirant First-line option for mild cases
Prescription antiperspirants containing aluminum chloride (20% or higher), such as Drysol, aremildA first-line treatment for hyperhidrosis that can be combined with Botox® to help maintain results. Note: nighttime skin irritation may occur.
Oral anticholinergic medications Alternative options
Oral medications such as oxybutynin may provide short-term relief, butNoticeable side effects(dry mouth, constipation, and drowsiness — making it unsuitable for long-term use. Botox® is a more reliable option.
miraDry® / Microwave ablation Permanent option
Health Canada–licensed microwave technology,Permanent destruction of sweat glands. Advantages: permanent results. Disadvantages: lower efficacy than Botox® (75% vs. 90%+), prolonged post-procedure swelling, higher cost, and suboptimal outcomes in some patients.We do not offer miraDry in-clinic, but clients are welcome to ask us to help compare options.
Endoscopic thoracic sympathectomy (ETS) Extreme option
Surgical procedure: thoracoscopic resection of the sympathetic nerve chain.Not recommended for axillary sweating alone — High risk, with compensatory sweating occurring in 60%+ of cases (increased sweating elsewhere on the body). Reserved only for severe cases where all other options have failed.
Treatment Decision Chart
| Severity | Recommended treatment plan |
|---|---|
| HDSS 1–2 mild | Prescription antiperspirant → if no relief, proceed to Botox |
| HDSS 3 Moderate | Botox First-line choice |
| HDSS 4 Severe | High-dose Botox® + long-term maintenance |
| Botox Repeatedly effective but seeking a permanent solution | Discuss miraDry options |
| All treatment options have failed | Surgical referral (rare) |
Dr. Xu’s 6-Step Axillary Hyperhidrosis Treatment Protocol
What appears to be a straightforward”Botox® for sweat reduction”,In practice, it encompasses a complete clinical process from diagnosis through treatment.
Detailed medical history + HDSS score
- Age of onset, family history, and nocturnal presentation
- Triggers, impact on daily life, and prior treatments
- HDSS scaleScore (Grade 1–4)
- Medication history (to rule out secondary causes)
- Comorbidity screening
Minor Starch-iodine test
Cleanse the underarm → apply 5% iodine solution → allow to dry completely → dust with starch powder → wait 5–10 minutes → areas of excessive sweating turn dark purple-black.Precise mapping of the hyperhidrosis zone,Guiding the design of subsequent Botox® injection point placement.
Determined by personalized dosage
Not”A blanket 50 units per side for everyone”. Based on:
- Minor Area of Minor’s test positive zone
- HDSS Severity
- Prior response history to Botox®
- Treatment goal (complete dryness vs. significant improvement)
Topical anesthesia + grid injection
20 Topical lidocaine anesthesia plus ice pack → multi-point injections across the Minor’s test–mapped area using a 1–1.5 cm grid → 2–5 units per point → entire procedure takes approximately 15 minutes.
2 Follow-up assessment at weeks
- Repeat Minor test for comparative assessment
- HDSS Re-assessment score
- Patient-reported satisfaction
- Touch-up when neededResidual zones (complimentary)
Personalized maintenance schedule
After the first session, duration of effect is tracked to establish a personalized maintenance schedule:
- Most patients return every 5–7 months
- Severe cases: 4–5 months
- Treat 4–6 weeks before summer
- Minor starch-iodine test re-assessed before each treatment session
Botox® treatment for axillary hyperhidrosis,Technically straightforward, but precision makes the difference — Minor The precision of the starch-iodine test + appropriate grid density + individualized dosing determine”Allow to dry completely”or”Residual damp patches”. — Dr. Dan Xu, M.D.
Botox Axillary Hyperhidrosis Treatment Results Timeline
The following three tables address the three most frequently asked questions.
How soon will I see results?
| stage | Duration | Presentation |
|---|---|---|
| Immediately post-injection | 0 hours | No change yet (Botox® requires time to take effect) |
| Initial results | 4–7 days | Significantly reduced sweating |
| Significant results | 2 weeks | Most patients achieve complete or near-complete dryness |
| Consistent results | 3–4 weeks | Fully stable results |
How Long Do Results Last?
| Severity | Duration of effect | indicates |
|---|---|---|
| Mild to moderate | 7–9 months | For many patients, once a year is sufficient |
| Moderate to severe | 5–7 months | Most patients’ treatment cadence |
| Extremely severe | 4–5 months | Shorter but still effective for control |
| Repeated treatments over 2+ years | Results may progressively last longer | Reduced gland activity |
Recommended treatment schedule
| scenario | recommendation |
|---|---|
| First treatment | HDSS 3+ treatment can proceed |
| Before summer | 4–6 weeks in advanceTreatment |
| Wedding / important event | 4–6 weeks in advance(to ensure full effect) |
| Long-term management | Individualized treatment every 5–9 months |
| Discontinue treatment | Gradual return to pre-treatment levels (3–6 months) |
Am I a Candidate for Axillary Botox® Treatment?
the following questionsMost patients report”yes”,You are very likely a good candidate.
6 Quick self-assessment
- HDSS Score ≥ Grade 3?
- excessive sweatingBilateral symmetry and Stops at night?
- Hyperhidrosis inPubertyapproximately to begin?
- ImpactClothing choices / social life / work?
- Prescription antiperspirantIneffective or not tolerated?
- hopeNon-permanent / non-surgicaltreatment plan?
You may be a good candidate for Botox treatment if you:
- 18 years of age or older, with primary axillary hyperhidrosis
- HDSS 3–4 grade, significantly impacting quality of life
- No history of allergy to Botox
- No neuromuscular disorders such as myasthenia gravis
- Not pregnant or breastfeeding
- Willing to commit to maintenance treatments every 5–9 months
- Expected outcomes”Significant improvement”rather than”Permanent cure”
- No active underarm infection
You may not be a suitable candidate or may require careful evaluation if you:
- Pregnancy / breastfeeding
- Known allergy to Botox® protein
- Myasthenia gravis / Lambert-Eaton syndrome
- Use of aminoglycoside antibiotics
- Secondary hyperhidrosis (underlying condition must be treated first)
- Active underarm infection / eczema
- Extreme needle phobia that prevents cooperation with the procedure
- Expectations”A single permanent cure”
- Severe anxiety-related hyperhidrosis (requires combined psychological therapy)
Why a MedSpa’s”Rapid Sweat Reduction with Botox®”Often deliver poor results?
Client D — 32-year-old Asian female · HDSS Grade 3 · Two previous Botox treatments at a medspa with unsatisfactory results
Going to a MedSpa Speed-focused · Standardized approach
- No Minor starch-iodine test performed
- “50 units per side”Standardized dosing
- Sparse grid (3 cm spacing), missing areas of active sweating
- No topical anesthesia (for an expedited treatment)
- No 2-week follow-up appointment
- No touch-up protocol in place
- Result: residual damp patches in the sweating zone
- Clients feel”Botox Didn’t work for me”
Visit ID Cosmetic Precision · Individualized
- Detailed medical history + HDSS score
- Minor Precise mapping with the starch-iodine (Minor) test
- Individualized dosing based on treatment area (70 units per side)
- 1.2cm Dense grid covering the entire positive zone
- Topical anesthesia + ice packing for a comfortable treatment experience
- 2 Follow-up visit + comparative Minor’s test
- Outcome: complete dryness lasting 7 months
- Clients become long-term patients
“Botox ineffective”This is usually not a Botox® issue — it isA matter of technique and dosage. Minor Minor test + individualized dosage + dense grid coverage — these three details are what separate a 90% success rate from a 50% one. — Dr. Dan Xu, M.D.
Dr. Dan Xu, M.D., CCFP
ID Cosmetic Clinic Founder & Medical Director · Allergan / Botox North America Official Trainer · Author of Timeless Asian Beauty
As one of Toronto’s most recognized Chinese-Canadian medical aesthetic physicians, Dr. Dan Xu brings extensive clinical expertise in Botox applications,Over 80,000 proceduresinjection experience, including approximately 3,000+ procedures. She is Allergan’s North AmericaOfficial Trainer,Dr. Xu has provided standardized Botox® injection training to fellow physicians for many years. Botox® treatment for axillary hyperhidrosis is one of the classic cases featured in her teaching curriculum.
Dr. Xu’s axillary hyperhidrosis treatment is distinguished by“Minor Minor’s test precision mapping + personalized dosage + dense grid injection + 2-week follow-up touch-up”Four essential elements make up our complete protocol, ensuring every patient achieves the best possible outcome.
Her medical philosophy:“Medical Botox® is not a cosmetic luxury — it is a clinically meaningful treatment that genuinely improves patients’ quality of life.”
Professional Credentials & Certifications
- Education — M.D. + Family Medicine Specialty (CCFP)
- Experience — 80,000 Botox injections · 3,000+ axillary hyperhidrosis
- Expertise — Minor Starch-iodine test + grid injection + individualized dosing
- Authority — Allergan / Botox North America Official Trainer
- Authority — Allergan / Juvederm North America Trainer
- Authority — Cynosure PicoSure Pro Canada KOL
- Authority — Sofwave Medical Canada KOL
- Authority — McMaster University Clinical Teaching Physician
- Trust — CPSO Registered Physician · Verify Publicly ↗
- Trust — Author of Timeless Asian Beauty (2024)
《Timeless Asian Beauty》
Although Dr. Dan Xu’s book Timeless Asian Beauty is primarily focused on aesthetics, its chapter on Botox and neuromuscular modulation provides a systematic explanation of Botox inBoth cosmetic and medical domainsIts applications — from wrinkle relaxation to hyperhidrosis, from platysmal bands to migraine prevention — demonstrate that Botox® offers far more than”Wrinkle relaxation”its broad medical value.
Not to change who you are — but to embrace the most authentic version of yourself.
Identify with your own beauty. — Dr. Dan Xu, M.D.
Why Trust ID Cosmetic Clinic for Axillary Hyperhidrosis with Botox®?
Google The E-E-A-T framework evaluates medical content across four dimensions. Below are the specific credentials supporting every statement on this page.
Real-world clinical experience
- 80,000 Botox injections performed to date
- 3,000+ axillary hyperhidrosis treatments performed
- Extensive experience managing and correcting MedSpa treatment failures
- Minor starch-iodine test + HDSS profile for every patient
Medical professional training
- M.D. Full medical school training + CCFP Family Medicine Specialty
- Botox In-depth understanding of neuromuscular mechanisms
- Differential Diagnosis: Primary vs. Secondary Hyperhidrosis
- Minor Minor’s test + individualized dosage protocol design
Industry-recognized credentials
- Allergan / Botox North America Official Trainer
- Allergan / Juvederm North America Trainer
- Sofwave Medical Canada KOL
- McMaster University Clinical Teaching Physician
- IMCAS International Conference Speaker
Transparent and verifiable
- CPSO Registered practicing physician (publicly verifiable)
- Google 4.9★ · 283 Verified reviews
- Written informed consent form signed before each treatment
- Minor Photo documentation before and after the test
- Book: Timeless Asian Beauty (2024)
Axillary hyperhidrosis Botox® is”Medical”rather than”cosmetic”
Health Canada–licensed since 2004, Botox® is the gold-standard treatment for axillary hyperhidrosis. As an Allergan/Juvéderm North America Trainer, Dr. Xu delivers this treatment with physician-level precision and accountability.Significantly improves quality of lifetreatment.
About the Cost of Botox® Treatment for Axillary Hyperhidrosis
Many patients ask during their first consultation:”How many units are needed and what is the cost?”However, this type of”Priced per unit”The way questions are framed can lead you to decisions that are not in your best interest. When it comes to Botox® for axillary hyperhidrosis,90% of treatment effectiveness depends on whether the dosage is sufficient to fully cover your sweating zone — If the goal is”Save units”Under-dosing leads to suboptimal results — and that is simply a waste. That is why we always perform a Minor starch-iodine test first, mapping your actual sweat distribution to determine the right individualized dose for you.
At ID Cosmetic Clinic, axillary hyperhidrosis with Botox® Performed personally by the physician — Because treatment involves a multi-point grid design, individualized dosage decisions, and clinical judgment around touch-up injections — all of which directly affect outcomes and longevity — physician oversight is essential. As an Allergan/Juvéderm North America Trainer, Dr. Xu uses axillary hyperhidrosis injections as a standard case in her physician training program. Routine maintenance visits for established long-term patients with a stable protocol may be performed by trained clinical staff under physician supervision, and are priced accordingly.
We do not publish a standard price list online, because doing so shifts focus to numbers rather than the factors that truly determine outcomes — your sweat zone, HDSS severity, target dryness level, and desired maintenance frequency all shape the right plan and its cost. After a Free 30-Minute Consultation, Dr. Xu will clearly outline your sweat zone, recommended dosage, and corresponding fee structure so you can make a fully informed decision.Treatment decisions should be driven by clinical need, not price.
- We accept VISA / Mastercard / Amex / Debit / E-transfer
- Affirm / PayBright financing available (select treatment packages)
- Private insurance: some extended health benefit (EHB) plans cover Botox® for axillary hyperhidrosis — inquire about your individual case
- OHIP:Does not cover medical aesthetic / hyperhidrosis treatments
- All new clients receive a complimentary 30-minuteFreeConsultation assessment
Common Risks · Contraindications · Safety Protocols
Botox Underarm treatment is very safe overall, but all medical procedures carry some risk. Transparent communication is our responsibility.
Common reactions (short-term, post-treatment)
- Mild at injection sitesbruising(3–7 days to resolve)
- Temporary at the injection sitetenderness(2–3 days)
- A small number of patients, short-termCompensatory sweating(Slight increase in other areas, rarely persistent)
- Avoid massaging the underarm area for 24 hours post-injection
- Avoid strenuous exercise for 24 hours post-injection
Serious risks (rare, but require disclosure)
- Allergic reaction — Extremely rare; severe cases require epinephrine
- Upper limb muscle weakness — Injection too deep may cause diffusion into underlying muscles; this risk is avoided by a physician with thorough anatomical knowledge
- Infection — Rare with strict sterile technique
- Suboptimal results — Minor Inadequate testing / insufficient dosage
- Antibody formation — With repeated long-term use, a very small number of patients may develop antibodies that reduce effectiveness
Relative contraindications (require careful assessment)
- Use of aminoglycoside antibiotics (may potentiate the effect of Botox®)
- Concurrent use of anticoagulant medications (increased bruising risk)
- Recent major vaccination (a 2-week interval is recommended)
- Active autoimmune disease
- Extreme needle phobia
Absolute contraindications (not suitable)
- Pregnancy / breastfeeding
- Known allergy to Botox® protein
- Myasthenia gravis / Lambert-Eaton syndrome / ALS
- Active axillary infection
- Uninvestigated secondary hyperhidrosis
- Unrealistic expectations (“A single permanent cure”)
Safety protocols strictly enforced by Dr. Xu
- All Botox® treatments are personally performed by Dr. Dan Xu, M.D.
- Minor starch-iodine test is mandatory
- Individualized dosage determination (not standardized)
- Every patient signs a written informed consent form prior to treatment
- 2 Follow-up assessment at 2 weeks + touch-up injection if needed
- The clinic maintains emergency allergy response equipment at all times
Additional Comparison & Reference Data
| Age of onset | Around puberty |
|---|---|
| Symmetry | Bilateral symmetry |
| Night sweating | None / extremely rare |
| Family history | Often positive |
| First-line treatment | Botox / Dysport / Xeomin Injection |
| Age of onset | Any age · Most commonly presents after adolescence |
|---|---|
| Symmetry | Generalized / unilateral presentations also considered |
| Night sweating | Common (warning sign) |
| Family history | Often negative |
| First-line treatment | Treat the underlying condition first (hyperthyroidism / endocrine disorder) |
Toronto Axillary Hyperhidrosis — FAQ
What Is Axillary Hyperhidrosis? How Does Treatment Work?
Axillary hyperhidrosis (excessive underarm sweating) is a physician-led program offered at ID Cosmetic Clinic in Markham/Toronto. All consultations and treatment plans are conducted personally by Dr. Dan Xu, M.D., CCFP, Allergan/Juvéderm North America Trainer. Because mechanisms, devices, and indications vary by individual, we recommend a Free 30-Minute Consultation for a personalized assessment.
Who Is a Good Candidate for Axillary Hyperhidrosis Treatment?
Most healthy adults (18+) may be considered candidates following a consultation and assessment.Not suitable for:Pregnancy / breastfeeding / active flare of a serious chronic condition / active infection at the injection site / known severe allergy history. Your specific candidacy will be assessed by Dr. Xu during your consultation, based on your medical history, anatomy, and treatment goals.
How long do results for axillary hyperhidrosis last?
Results depend on your specific treatment plan, individual metabolism, and maintenance frequency. During your consultation, Dr. Xu will provide clear, personalized expectations — We do not promise outcomes beyond what is medically reasonable。
What Are the Side Effects and Risks of Axillary Hyperhidrosis Treatment?
All aesthetic procedures carry inherent risks; however, oversight by Dr. Dan Xu, M.D., CCFP, combined with strict sterile technique and personalized dosage and depth assessment, keeps those risks within a reasonable, manageable range. Common mild reactions such as bruising and swelling typically resolve within 5–10 days. A detailed informed consent form will be reviewed and signed following your consultation.
Can underarm neurotoxin injections permanently cure hyperhidrosis?
Cannot be permanently cured, but can be effectively managed long-term。Botulinum toxin blocks acetylcholine release at nerve terminals. Results gradually wear off after 6–8 months, requiring periodic maintenance treatments. However, clinical observation shows thatClients who have received regular injections for 2–3 or more years generally experience a reduction in baseline perspiration,Even after stopping treatment, baseline sweat levels remain lower than before. This reflects a chronic condition management approach — not a one-time cure.
Is the underarm botulinum toxin injection painful? Is anesthesia required?
The underarm skin has sparse nerve distribution, making it less sensitive than facial injection sites. Dr. Xu uses 30G ultra-fine needles combined with a 10-minute ice pack application before treatment. The vast majority of clients describe the sensation as a mild pinch that is easily tolerated.EMLA topical anesthetic cream is not recommended,as it can temporarily affect sweat gland assessment and Minor's test results. The full bilateral underarm injection takes approximately 15–20 minutes.
Botox、Dysport、Xeomin What is the difference when used for hyperhidrosis?
All three are botulinum toxin products, but they differ slightly in molecular structure and onset time:Botox(onset in 3–7 days, results lasting 6–8 months, with the most extensive published evidence;DysportFaster onset of 2–4 days, slightly greater diffusion, suitable for severe or large-area hyperhidrosis;Xeomin(Pure-form neurotoxin) contains no accessory proteins, making it suitable for clients who have developed antibodies to Botox® or experienced diminishing response. Dr. Xu will recommend based on your individual response and medical history.
Why do some people see no results from neurotoxin injections?
Three common reasons: (1) Minor's test not performed,Grid points placed outside the actual sweating zone, leading to missed coverage; (2) Insufficient dosage—— price-driven clinics cut costs by using only 50–60 units total for both underarms (effective dosing typically requires 80–120 U); (3) Antibody formation—— After multiple injections, neutralizing antibodies may develop; switching to a protein-free formulation such as Xeomin® can restore effectiveness.
How long do results last?
Clinical average:Women: 6.5–7.5 months; Men: 5–6 months(faster metabolism). Those with severe hyperhidrosis tend to have shorter results than those with mild cases. Duration is also affected by activity level, metabolism, and individual physiology. Dr. Xu recommendsTouch-up 4 weeks before summerCovering the full peak sweating season for optimal results.
Is it safe to have injections during pregnancy or breastfeeding?
No.The safety of neurotoxin injections during pregnancy and breastfeeding has not been sufficiently established by clinical evidence. Both the FDA and Health Canada classify it as a Category C risk. We recommendPostpartum + at least 3 months after fully stopping breastfeedingwaiting until this stage has passed before beginning an assessment. For those with pressing needs during this period, prescription-strength aluminum chloride antiperspirant (Drysol) may serve as a temporary bridge — Dr. Xu will assess whether it is appropriate for you.
Can it cause compensatory sweating (increased perspiration in other parts of the body)?
Clinical literature reports the incidence of compensatory sweating following axillary neurotoxin injection as <5%,and typically mild(Any mild increase in perspiration on the back or chest is generally not bothersome to patients. This is entirely different from the severe compensatory sweating seen in 50–80% of patients following endoscopic thoracic sympathectomy (ETS) surgery. If you have heard that "treating the underarms causes sweating all over the body," that is a surgical risk — not a risk associated with neurotoxin injections.
Minor What is the Minor's iodine-starch test, and why does Dr. Xu insist on performing it?
Minor The test is a classic dermatological procedure developed in 1928 — iodine solution is applied to the skin in a dim room, followed by starch powder; areas of active perspiration will revealDeep purple patches,precisely mapping the active sweat gland boundaries. This step determines the injection grid and dose distribution.Skipping the Minor's test and estimating the treatment area by eye increases the risk of missed sweating zones or wasted dosage—— This is the non-negotiable standard in Dr. Xu's protocol — and the step most commonly skipped at general medspas.
Can I work and exercise normally on the day of treatment?
Post-injectionMinimal downtime — return to normal activities the same day。That said, we recommend: (1) keep your upper body upright for 4 hours post-injection; (2) avoid strenuous exercise, rubbing the underarms, or using a sauna for 24 hours; (3) no baths (showers are fine); (4) no alcohol. You can return to all normal activities the next day, and the treatment takes effect within 7 days.
I live in downtown Toronto / North York / Richmond Hill / Scarborough — is it worth making the trip to Markham?
ID Cosmetic Clinic Located at 30 Gibson Dr., Markham — approximately 30–40 minutes by car from downtown Toronto, 20–25 minutes from North York, 15–20 minutes from Richmond Hill / Vaughan, and 20–30 minutes from Scarborough. Conveniently situated at the intersection of Highway 7 and Highways 404 / 407.Underarm hyperhidrosis treatment is needed only once every six months,Choosing a clinic that performs a Minor's test, has the physician personally administer injections, and offers a 2-week follow-up touch-up matters far more than convenience — one inadequate treatment means struggling with sweating for another six months.
Real Clients · Google Reviews
What Our Clients Say
Vivian Okoth
0 reviews
Dr. Xu and the staff here are fantastic. I’ve been coming here for years and always leave satisfied! The clinic has a relaxed, comfortable, and welcoming atmosphere—I always look forward to my visits.
Mary Jane
1 reviews
I am so grateful to the friend who recommended this place to me. Dr. Xu is amazing—she is the only doctor I’ll see from now on! Everyone on the staff is incredibly friendly and helpful.
Millicent Akisa
1 reviews
She is truly outstanding! She is both friendly and professional, highly knowledgeable, and has a very warm and gentle manner. She listens carefully to your needs and takes the time to explain all the options to you.
Chen cheng
15 reviews
Vivian is extremely professional. Of all the times I've been here, her technique and service are the best. She finished my hyaluronic acid injection very quickly, with minimal pain. She's also beautiful and has a great p…
Emmaculate Matswa
1 reviews
I'm so glad I came here. Dr. Xu is incredibly knowledgeable, and every piece of advice she gave was meticulous and thoughtful. I really enjoyed talking to her about skincare. Everyone here is so warm and friendly .
Sally Yang
2 reviews
Ling was absolutely amazing! She is so friendly, kind, and welcoming. She made the whole experience so enjoyable and comfortable. Truly appreciate her warm personality and excellent service. Highly recommend!
Zara F. Bell
2 reviews
Absolutely amazing clinic. I was treated with the upmost care and respect. Felt like I've know them my whole life. The whole crew is amazing and so sweet! The service was impeccable by Dr. Dan Xu, she is literally the be…
Caroline Fan
8 reviews
I had a really pleasant visit at ID cosmetics today with Ling. I had my pico laser appointment today. Ling treated me with such kindness and care. She was really attentive prepping me for my treatment and checking in on…
Vivian Okoth
0 reviews
Dr. Xu and the staff here are fantastic. I’ve been coming here for years and always leave satisfied! The clinic has a relaxed, comfortable, and welcoming atmosphere—I always look forward to my visits.
Mary Jane
1 reviews
I am so grateful to the friend who recommended this place to me. Dr. Xu is amazing—she is the only doctor I’ll see from now on! Everyone on the staff is incredibly friendly and helpful.
Millicent Akisa
1 reviews
She is truly outstanding! She is both friendly and professional, highly knowledgeable, and has a very warm and gentle manner. She listens carefully to your needs and takes the time to explain all the options to you.
Chen cheng
15 reviews
Vivian is extremely professional. Of all the times I've been here, her technique and service are the best. She finished my hyaluronic acid injection very quickly, with minimal pain. She's also beautiful and has a great p…
Emmaculate Matswa
1 reviews
I'm so glad I came here. Dr. Xu is incredibly knowledgeable, and every piece of advice she gave was meticulous and thoughtful. I really enjoyed talking to her about skincare. Everyone here is so warm and friendly .
Sally Yang
2 reviews
Ling was absolutely amazing! She is so friendly, kind, and welcoming. She made the whole experience so enjoyable and comfortable. Truly appreciate her warm personality and excellent service. Highly recommend!
Zara F. Bell
2 reviews
Absolutely amazing clinic. I was treated with the upmost care and respect. Felt like I've know them my whole life. The whole crew is amazing and so sweet! The service was impeccable by Dr. Dan Xu, she is literally the be…
Caroline Fan
8 reviews
I had a really pleasant visit at ID cosmetics today with Ling. I had my pico laser appointment today. Ling treated me with such kindness and care. She was really attentive prepping me for my treatment and checking in on…
Grace
Local Guide · 13 reviews
I got a treatment done by Ling today and she was super friendly and helpful. She made me feel very comfortable throughout the entire process from the beginning til the end and I’d like to get it done by her again next ti…
Yvonne H
Local Guide · 54 reviews
Ling was so kind and super precise. I loved her recommendations—felt like she just knew what I needed! Thank you!
Dou Xu
2 reviews
Ling is just amazing—so gentle and professional. She really knows her stuff! I felt super cared for. The whole experience? Honestly, so relaxing.
Yan Sun
3 reviews
Dr. Dan Xu is seriously amazing—so skilled and patient! Felt super at ease the entire time. The results? Wow, just wow.
Olivia W
3 reviews
Entrusting my face to Dr. Xu and her team is reassuring, and everyone's service attitude is super nice. The clinic environment is clean and elegant, and Dr. Xu is enthusiastic and professional. I have always trusted her…
Hana Yu
9 reviews
I have been here since 3 years ago, Dr.Xu is very professional and all the staff are very nice and patient. I highly recommend this place!
xiaojie chen
7 reviews
Susie has an incredibly caring attitude, and all of her suggestions were truly helpful. I really appreciated her support!
Jackie Tse
Local Guide · 18 reviews
Dr Xu is very friendly and professional. Appointment was made quickly and the consultants provided professional and helpful advice. After the procedure, the consultant provided advice on after care and treatment plans. H…
Grace
Local Guide · 13 reviews
I got a treatment done by Ling today and she was super friendly and helpful. She made me feel very comfortable throughout the entire process from the beginning til the end and I’d like to get it done by her again next ti…
Yvonne H
Local Guide · 54 reviews
Ling was so kind and super precise. I loved her recommendations—felt like she just knew what I needed! Thank you!
Dou Xu
2 reviews
Ling is just amazing—so gentle and professional. She really knows her stuff! I felt super cared for. The whole experience? Honestly, so relaxing.
Yan Sun
3 reviews
Dr. Dan Xu is seriously amazing—so skilled and patient! Felt super at ease the entire time. The results? Wow, just wow.
Olivia W
3 reviews
Entrusting my face to Dr. Xu and her team is reassuring, and everyone's service attitude is super nice. The clinic environment is clean and elegant, and Dr. Xu is enthusiastic and professional. I have always trusted her…
Hana Yu
9 reviews
I have been here since 3 years ago, Dr.Xu is very professional and all the staff are very nice and patient. I highly recommend this place!
xiaojie chen
7 reviews
Susie has an incredibly caring attitude, and all of her suggestions were truly helpful. I really appreciated her support!
Jackie Tse
Local Guide · 18 reviews
Dr Xu is very friendly and professional. Appointment was made quickly and the consultants provided professional and helpful advice. After the procedure, the consultant provided advice on after care and treatment plans. H…
Ready to begin your treatment journey?
Book a free 30-minute consultation with Dr. Dan Xu (M.D., CCFP). She will conduct a professional assessment and design a treatment plan tailored to you — no upsell, no pressure, just answers to the questions you truly want to know.
Free 30-Minute Consultation
Every consultation is conducted personally by Dr. Xu (Mon–Sat).
24 hr response · English/Chinese OK
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