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Botulinum toxin (Botox®) injection can reduce axillary odor in bromhidrosis, but it does not remove the apocrine sweat glands that are the root cause. For a more definitive solution, miraDry® (microwave thermolysis of sweat glands) or surgical excision (apocrine gland removal) are the leading options. Botox® takes about 10 minutes with no downtime and lasts 4-7 months; miraDry® is a single session with semi-permanent results; surgical excision can target a curative outcome and may be covered by Japanese national health insurance. This article compares the three representative treatments for axillary osmidrosis from the medical perspectives of botulinum toxin pharmacology, microwave thermolysis, and apocrine gland excision, to help men choose the right treatment.
CONTENTS
Limited time: Free consultation for bromhidrosis and hyperhidrosis (physician guidance on Botox®, miraDry®, and surgical excision)
*Consultations are free. Treatment selection is determined through physician examination. *LINE guidance is not a medical diagnosis. Diagnosis and prescription decisions are made by a physician during the in-clinic visit.
Bromhidrosis, medically known as axillary osmidrosis, refers to a condition in which a distinct, strong odor is emitted from both armpits. In Japan, the reported prevalence is roughly 10-16%, making it a far from uncommon condition.
The principal source of the odor is sweat secreted by the apocrine sweat glands in the underarms. Apocrine glands are also present around the genitals, areolae, and ear canals, attached to tissue surrounding hair follicles, and begin to develop and become active after puberty. Sweat itself is odorless, but apocrine sweat is viscous and rich in fats, proteins, lipids, and iron. When this sweat is broken down by skin-resident bacteria (such as Corynebacterium species), the characteristic pungent odor of bromhidrosis is produced.
Human skin contains two types of sweat glands, each with distinct properties. Understanding the difference is essential knowledge for bromhidrosis.
| Item | Apocrine Glands | Eccrine Glands |
|---|---|---|
| Distribution | Limited: underarms, genitals, areolae, ear canals | Whole body (especially palms, soles, forehead) |
| Sweat composition | Viscous sweat rich in fats, proteins, iron, lipids | 99% water; remaining 1%% salt and urea |
| Odor | When broken down by bacteria, characteristic pungent odor (bromhidrosis) | Essentially odorless; prolonged dampness can cause mildew or sweat smell |
| Onset | Develops after puberty | Functions from early childhood |
| Function | Thought to play a pheromone-like role | Thermoregulation (cooling via evaporative heat loss) |
The essence of bromhidrosis treatment is targeting the apocrine glands. miraDry® and surgical excision aim for fundamental improvement by destroying or removing these glands. Botox®, on the other hand, blocks neurotransmitter release and suppresses sweating itself, reducing secretion from both eccrine and apocrine glands.
Bromhidrosis has a clear hereditary component. If either parent has bromhidrosis, the probability of a child also developing it is reported to be around 50-80%. This is because the number and activity of apocrine glands are largely determined by genetics.
You can use the following self-check to assess your own tendency.
If four or more apply to you, bromhidrosis is likely. However, a definitive diagnosis requires examination by a physician. Because we tend to become desensitized to our own body odor, feedback from family members and an objective medical assessment are important.
Bromhidrosis and hyperhidrosis are often confused but are medically distinct conditions. Bromhidrosis (axillary osmidrosis) refers to a state in which a distinctive odor is produced, while hyperhidrosis refers to abnormally excessive sweating.
In clinical practice, however, the two often coexist, and there are also cases in which someone does not have bromhidrosis but hyperhidrosis spreads odor more widely. It is therefore important to distinguish the two correctly when choosing a treatment.
The principal cause of bromhidrosis is sweat from the apocrine glands in the underarms. Apocrine sweat is viscous and rich in lipids, proteins, and iron. When skin-resident bacteria (such as Corynebacterium species, Staphylococcus, and Propionibacterium) break it down, the following odor compounds are generated.
Because these odor molecules are generated by the metabolic activity of skin bacteria, the three basic approaches to bromhidrosis treatment are: reduce sweat itself, suppress bacterial growth, or destroy or remove the sweat glands themselves.
Hyperhidrosis is a condition in which the eccrine glands become overactive, producing excessive sweat even when thermoregulation is not required. It is classified by the affected site as follows.
Eccrine sweat is 99% water, with the remaining 1% being salt and urea. It is normally watery and odorless, but if the underarms remain damp for long periods, moisture-loving bacteria multiply and produce a “sweaty” smell. When combined with bromhidrosis, evaporating eccrine sweat can spread the bromhidrosis odor more widely – a particularly troublesome state.
For these reasons, botulinum toxin can be effective for both hyperhidrosis and bromhidrosis, and it is positioned as a first-line option for mild cases of either condition.
The principal medical treatments for bromhidrosis fall broadly into three categories. Each uses a different approach and has very different durations of effect, downtime, and pricing.
For mild-to-moderate bromhidrosis, it is common to start with Botox® and step up to miraDry® or surgical excision if the effect is insufficient or longer duration is desired. For severe bromhidrosis, surgical excision is sometimes chosen from the outset.
Below is a typical flow from “I think I might have bromhidrosis” to receiving treatment, along with key decision criteria.
During a free consultation, a physician evaluates severity and recommends the most appropriate treatment. You do not need to “jump straight to surgery” – many people with mild symptoms find that Botox® alone resolves their concerns.
If you are concerned about bromhidrosis, please come to a free consultation (our physicians individually recommend Botox®, miraDry®, or surgical excision)
*Consultations are free. Private examination rooms for your privacy. *LINE guidance is not a medical diagnosis. Diagnosis and prescription decisions are made by a physician during the in-clinic visit.
Botulinum toxin injection for bromhidrosis is a treatment in which a drug whose active ingredient is botulinum toxin type A, produced by Clostridium botulinum, is injected into both underarms to suppress sweat secretion. It is variously called a “Botox® injection”, “botulinum injection”, or “underarm injection”.
In aesthetic medicine, Botox® is widely known for treating expression wrinkles, masseter (jaw) reduction, and facial slimming, but it is also an evidence-based medical treatment: insurance coverage for hyperhidrosis and bromhidrosis was approved in Japan in 2012. BOTOX® (Allergan) is the representative product, with generics such as Regenox and Coretox.
Sweat glands receive sweating signals via acetylcholine, a neurotransmitter released from nerve terminals. When acetylcholine is released, the sweat glands are activated and sweat is secreted.
Botulinum toxin type A cleaves the SNARE complex (synaptobrevin, SNAP-25, syntaxin) at nerve terminals, blocking the release of acetylcholine. As a result, the sweat signal from nerve to gland is interrupted, and sweat secretion at the injection site drops dramatically.
Through this mechanism, the following changes occur after Botox® injection:
The net effect is roughly 4-7 months of “no sweat, so no concern about odor“. However, because Botox® does not destroy the sweat glands themselves, things return to the previous state once the effect wears off.
Botox® is the most accessible and easiest-to-try treatment for bromhidrosis. The main advantages include:
For people who feel “surgery up front is scary” or “I want to try the effect before considering definitive treatment”, Botox® is the ideal entry-level option. In fact, repeating Botox® 2-3 times often stably reduces odor and sweating, and many patients end up not needing miraDry® or surgical excision at all.
Botox® injection is relatively safe but does carry the following disadvantages and possible side effects.
In addition, Botox® is contraindicated during pregnancy or breastfeeding, and in patients with neuromuscular disorders (e.g., myasthenia gravis). For safe treatment, always undergo a physician interview at a medical facility before receiving the injection. Some patients also consider comparison with medical laser hair removal, but laser hair removal has only limited effect on bromhidrosis itself.
The price of Botox® for bromhidrosis depends on the number of units injected and the type of product (original or generic). Typically 60-100 units are injected into both underarms.
| Dose | Original BOTOX® | Generic | Indication |
|---|---|---|---|
| 60 units (both underarms) | ¥50,000-¥70,000 | ¥30,000-¥50,000 | Mild bromhidrosis / mild hyperhidrosis |
| 80 units (both underarms) | ¥60,000-¥75,000 | ¥40,000-¥55,000 | Standard hyperhidrosis / bromhidrosis |
| 100 units (both underarms) | ¥65,000-¥85,000 | ¥50,000-¥65,000 | Moderate-to-severe bromhidrosis / hyperhidrosis |
*Prices reflect typical market levels as of May 2026 and vary by clinic. Severe hyperhidrosis may be covered by Japanese national health insurance (insurance coverage requires meeting certain severity criteria such as HDSS). Insurance coverage is generally not granted for bromhidrosis alone.
If you are concerned about bromhidrosis, please come to a free consultation (our physicians individually recommend Botox®, miraDry®, or surgical excision)
*Consultations are free. Private examination rooms for your privacy. *LINE guidance is not a medical diagnosis. Diagnosis and prescription decisions are made by a physician during the in-clinic visit.
miraDry® is a treatment device for bromhidrosis and hyperhidrosis developed by the U.S. company Miramar Labs. It is FDA-cleared and approved by the Japanese Ministry of Health, Labour and Welfare. As a third option that provides “semi-permanent improvement of bromhidrosis and hyperhidrosis without a scalpel”, it sits between Botox® and surgical excision.
miraDry® delivers 5.8 GHz microwaves (electromagnetic waves) from the surface of the skin, using the heat energy to destroy both apocrine and eccrine glands. A single session is reported to destroy 70-80% of sweat glands, reducing bromhidrosis odor and underarm sweat to about 20-30% of baseline.
Microwaves used in miraDry® have the property of selectively vibrating water molecules to generate heat. By leveraging this physical property, the technology selectively heats and destroys sweat glands, which have a high water content.
The procedure goes as follows:
The microwave energy is designed to concentrate heat at the interface between skin and subcutaneous fat (the depth where sweat glands lie), while the skin surface is protected by a cooling plate, minimizing the risk of burns or scarring. Destroyed sweat glands do not regenerate, so the effect is semi-permanent.
The biggest appeal of miraDry® is that it delivers a “semi-permanent effect without cutting“. It avoids the surgical risks of excision and the need for repeat visits of Botox® – combining the best of both.
miraDry® is the ideal choice especially for people who think “I want to avoid major surgery like excision, but I also do not want to repeat Botox® every year“.
miraDry® is a safe treatment, but it has the following disadvantages and possible side effects. Make sure you understand them before the procedure.
Many patients also feel a bumpy or lumpy sensation in the underarms for some time after treatment, but this is a normal reaction and settles naturally within 2-4 weeks. Patients with pacemakers, those who are pregnant, or those who are breastfeeding cannot receive miraDry®.
miraDry® is not covered by health insurance and is offered as a self-pay treatment. Pricing varies by clinic but typical market levels are as follows.
| Plan | Typical Price | Indication |
|---|---|---|
| First session (full treatment) | ¥300,000-¥400,000 | First-time miraDry® treatment |
| Second session (re-treatment) | ¥100,000-¥200,000 | When the first session was insufficient |
| Trial (limited area) | ¥150,000-¥200,000 | Trial treatment for mild cases |
| Pain relief / anesthesia fee | Free-¥20,000 | May be billed separately depending on clinic |
Most patients are satisfied with a single miraDry® session, but severe bromhidrosis may benefit from two sessions to maximize results. Total expected cost is around ¥400,000-¥600,000.
If bromhidrosis is bothering you, start with a free consultation. Our men-only specialist physicians will recommend the best treatment for you.
*Private examination rooms for your privacy. Men-only specialist clinic. *LINE guidance is not a medical diagnosis. Diagnosis and prescription decisions are made by a physician during the in-clinic visit.
Surgical excision (also known as the “senjo-ho” method, or apocrine gland excision) is a surgical procedure in which a 3-5 cm incision is made along the natural skin crease in each underarm and the surgeon directly visualizes and removes the apocrine glands, eccrine glands, and hair follicles. Sometimes called the “flap method”, it has the longest history among bromhidrosis surgeries and is the only method covered by Japanese health insurance.
The skin is incised and lifted (creating a flap), apocrine glands on the underside of the skin are carefully removed with scissors, and the skin is then sutured back into its original position. To promote adhesion between skin and subcutaneous tissue, a tie-over (compression dressing) is applied at the end.
Surgical excision is the only bromhidrosis surgery performed under direct visualization, with the surgeon able to confirm and remove apocrine glands directly. The procedure is as follows:
The operation takes about 1.5-2.5 hours for both underarms. It is an outpatient procedure, but about two weeks of rest are required after surgery.
Surgical excision is the longest-established bromhidrosis surgery and offers definitive cure. Main advantages include:
Especially for those with severe bromhidrosis not satisfied with other treatments, or those seeking insurance-covered economical treatment, surgical excision is the first choice.
Surgical excision is a reliable treatment, but as a surgical procedure it carries proportional risks and downtime. Some people search “bromhidrosis surgery regret” online for a reason – understanding the disadvantages before surgery is essential.
To prevent regret, three points are critically important: choosing a surgeon with extensive surgical excision experience, following post-operative care thoroughly, and completely clearing your schedule for two weeks after surgery.
Surgical excision is the only bromhidrosis surgery covered by Japanese health insurance, but coverage requires meeting certain medical criteria (severity and symptom confirmation).
| Category | 30% copay | 10% copay | Notes |
|---|---|---|---|
| Insurance-covered (both underarms) | approx. ¥40,000-¥50,000 | approx. ¥15,000-¥20,000 | 9,990 reimbursement points + anesthesia / medication / bandage fees |
| Self-pay (both underarms) | approx. ¥250,000-¥400,000 | At aesthetic clinics; includes detailed post-operative care | |
| Scar revision surgery | ¥50,000-¥150,000 | Additional procedure if scarring is bothersome | |
*Insurance coverage is granted only when the physician diagnoses “axillary osmidrosis” and judges treatment to be medically necessary. Cases judged mild are treated as self-pay. The same procedure may be performed self-pay even at plastic surgery clinics, so confirm in advance.
Below is a quick-reference table comparing the three treatments introduced so far. Comparing across the five axes of “effect”, “downtime”, “price”, “scarring”, and “duration” makes it easier to choose the optimal treatment for you.
| Item | Botox® | miraDry® | Surgical Excision |
|---|---|---|---|
| Modality | Injection | Microwave thermolysis | Surgery |
| Treatment time | ~10 minutes | ~60-90 minutes | ~1.5-2.5 hours |
| Time to feel effect | 2-3 days | 1-2 months | 3 months (after full recovery) |
| Duration | 4-7 months | Semi-permanent | Permanent |
| Downtime | Virtually none | 3-7 days | 2 weeks |
| Scarring | None | None | 3-5 cm incision scar |
| Pain | Mild, only during injection | Almost none under anesthesia | Some pain for a few days post-op |
| Price (both underarms) | ¥30,000-¥80,000 | ¥300,000-¥400,000 | Insurance ¥40,000-¥50,000 / Self-pay ¥250,000+ |
| Insurance coverage | Available for hyperhidrosis | No (self-pay only) | Yes (severe cases only) |
| Effect on severe bromhidrosis | Limited | Good (70-80% reduction) | Excellent (curative) |
| Indication | Mild-moderate | Mild-severe | Moderate-severe |
The three options for bromhidrosis differ in how they balance “strength of effect” and “invasiveness (burden on the body)“. In general:
There is no single correct answer to “Botox® vs miraDry® vs surgical excision”. It is essential to consider your severity, lifestyle, budget, and tolerance for downtime all together.
Which of the three is the best fit depends on the severity of your bromhidrosis and your lifestyle. Below are typical cases and the optimal options for each.
Many people associate bromhidrosis with summer, but the best season for treatment is actually winter to spring, for the following reasons:
“If summer bromhidrosis bothers you, treat it the following winter” – that is the ideal cycle. Surgical excision in particular is recommended in winter.
Compared with women, men tend to have more activated apocrine glands due to the influence of male hormones (testosterone), so bromhidrosis odor often presents more strongly. Combined with greater muscle mass and higher sweat volume, men are especially prone to having odor spread further.
Bromhidrosis in men has significant social impact – affecting business situations, dating, marriage hunting, and relationships with children – so early treatment is important.
Concerns raised by male patients at our clinic generally fall into the following patterns.
These concerns are hard to control on your own, and medical intervention is often the most effective solution. Bromhidrosis is not a disease but a “constitutional trait”, but modern medicine offers options that can reliably improve it.
In clinical practice, bromhidrosis severity is judged by the following criteria. You can use them as a rough self-assessment guide.
| Severity | Odor level | Recommended treatment |
|---|---|---|
| Mild | Only the person themself notices it; faint at close range | Antiperspirants → Botox® |
| Moderate | Family or friends 1 m away mention it | Botox® → miraDry® |
| Severe | Others notice as soon as they enter the same room | miraDry® → surgical excision |
| Very severe | Strangers turn around just from passing by | Surgical excision (insurance applicable) |
*We tend to lose awareness of our own body odor through habituation, so feedback from family or trusted friends is useful. Final severity is determined objectively by a physician’s examination.
The effect and satisfaction of bromhidrosis treatment depend heavily on which clinic you choose. Especially with surgical excision, scar visibility and curative outcome vary greatly with the surgeon’s skill, so careful selection is essential.
Here are five points for choosing a clinic without regret.
Conversely, avoid “clinics that recommend only one treatment“, “clinics that pressure you to sign on the same day“, and “clinics with extremely low or extremely high pricing“. These tend to prioritize sales over patient interests and frequently lead to regret.
Men’s Care Clinic specializes in treatment of bromhidrosis and hyperhidrosis for men, offering the following services:
If you want to know how severe your bromhidrosis is or hear a direct comparison of treatments from a physician, please use our free consultation. Combining with medical hair removal can also be discussed.
QDoes Botox® actually cure bromhidrosis?
AThe short answer: Botox® reduces the odor of bromhidrosis, but it is not a definitive cure. Botulinum toxin type A suppresses acetylcholine release, reducing sweat secretion and, as a result, the production and spread of odor compounds. The effect lasts about 4-7 months, and most people with mild-to-moderate bromhidrosis report “the odor no longer bothers me”. For severe bromhidrosis it may be insufficient, in which case miraDry® or surgical excision become options.
QHow long does Botox® for bromhidrosis last?
AThere is individual variation, but generally 4-7 months. Effects begin to appear 2-3 days after treatment, peak within 1-2 weeks, and then gradually wane. To suppress sweat and odor continuously, repeat treatment every six months is recommended. With continued treatment, the body sometimes settles down and intervals can be lengthened.
QShould I choose Botox® or miraDry®?
AChoose based on lifestyle and budget. “Casual trial, value-focused, zero downtime” → Botox®; “semi-permanent in one session, dislike repeat visits, ¥300,000+ budget OK” → miraDry®. For severe bromhidrosis aiming for definitive cure, surgical excision (insurance possible) is also an option. The safest approach is to make the final decision in an in-person consultation with a physician.
QIs bromhidrosis treatment covered by health insurance?
AYes, under certain conditions. Surgical excision is covered by Japanese national health insurance when a physician diagnoses severe bromhidrosis / axillary osmidrosis (about ¥40,000-¥50,000 for both underarms at 30% copay). Botox® injection is covered for severe primary hyperhidrosis (severity must be assessed using the HDSS scale). miraDry® is entirely self-pay and not covered. Whether insurance applies is decided individually by the physician at examination.
QAre the scars from surgical excision noticeable?
ASurgical excision involves a 3-5 cm skin incision, so scars remain. However, because incisions follow the natural underarm skin creases, they are not very noticeable when arms are at your sides. Scar appearance depends heavily on the surgeon’s suturing skill, so choose a surgeon with extensive experience. Scars gradually fade over 6-12 months and eventually settle as a thin white line. Additional scar revision treatment is available if the scar bothers you.
QDoes miraDry® work fully in a single session?
AA single session is reported to destroy 70-80% of sweat glands, reducing bromhidrosis odor and underarm sweat to about 20-30% of baseline. For mild-to-moderate bromhidrosis, most patients are satisfied with one session. However, severe cases or those who feel the effect is insufficient may be recommended a second session. The second session is typically performed 6+ months later, at a cost of around ¥100,000-¥200,000.
QCan bromhidrosis recur after treatment?
ARecurrence risk differs by treatment. With Botox®, when the effect wears off the previous state returns – strictly speaking this is “effect ending” rather than “recurrence”. With miraDry®, destroyed glands do not regenerate, so recurrence risk is extremely low, although remaining glands can rarely become reactivated. With surgical excision, when properly performed, recurrence is essentially zero, with recurrence only possible if glands are left behind.
QAre bromhidrosis treatments painful?
AAll three treatments, under appropriate anesthesia, involve almost no strong pain during the procedure. Botox® uses topical anesthetic cream to reduce the brief sting of injection. miraDry® uses local anesthetic injection to thoroughly infiltrate the subcutaneous tissue, making microwave delivery essentially painless. Surgical excision is also performed under local anesthesia (no intraoperative pain), though swelling and discomfort continue for several days post-op.
QWhen is the best timing for bromhidrosis treatment?
ATo maximize the effect at the summer sweat peak, winter to spring (November-April) is recommended. Winter offers thick clothing that hides treated areas, low risk of sweat-related infection, and an easier downtime. Surgical excision in particular is recommended in winter. Botox® is fast-acting and effective even as a pre-summer measure, but for those wanting year-round effect, starting in winter is ideal.
QCan I return to work immediately after bromhidrosis treatment?
ADepends on the treatment. Botox® allows you to return to office work the same day (vigorous exercise and bathing from the next day). miraDry® allows return to office work the next day, but vigorous exercise is recommended only after one week. Surgical excision requires at least 3-5 days off office work and two weeks of rest, with even longer rest for those doing physical labor. Choosing a treatment that matches your job is a realistic consideration.
If bromhidrosis is bothering you, start with a free consultation. Our men-only specialist physicians will recommend the best treatment for you.
*Private examination rooms for your privacy. Men-only specialist clinic. *LINE guidance is not a medical diagnosis. Diagnosis and prescription decisions are made by a physician during the in-clinic visit.
References
This article was created under the supervision of the Mens Care Clinic medical team, based on package inserts, domestic and international clinical trial data, and relevant society guidelines. The content reflects information as of May 2026; always check the latest package inserts and guidelines. Actual prescription and treatment plans differ depending on each patient’s individual symptoms and constitution. Botox®, miraDry®, and surgical excision each have different indications and contraindications, so always consult a physician before deciding on a treatment.
AGA
