Laser underarm hair removal is a popular choice for many people looking to reduce underarm hair and cut down on the frequency of daily shaving, but how many sessions are needed, and how much does each one cost? How do the results and level of discomfort vary across different laser models? Taichung Arixin Clinic has compiled information on the principles of underarm laser hair removal, common hair removal methods, and comparisons of models such as the Alexander, LightSheer, and Triton lasers, as well as the number of sessions required, costs, pre- and post-treatment precautions, and frequently asked questions—helping you understand everything you need to know about choosing laser underarm hair removal.
Underarm Laser Hair Removal Catalog
What are the benefits of laser hair removal for the underarms? Can it help reduce body odor and excessive sweating?
Reduces sweat stickiness and minimizes stuffiness and odors
Underarm hair makes it easier for sweat to cling to the skin, trapping it under the arms and making it difficult to dissipate. Laser hair removal reduces hair density. With less hair, it’s easier to keep the underarms dry, which helps alleviate issues with heat buildup and odor—a benefit that’s especially noticeable for men who exercise intensely and sweat easily.
Prevent Bacterial Growth
The combination of underarm hair, sweat, and sebum creates an environment that is a breeding ground for bacteria, which is one of the main causes of body odor. Reducing hair growth can help curb bacterial growth, and when combined with good hygiene habits, it can help keep your underarms fresh and minimize odor.
Beauty Boosts Self-Confidence
Although men’s underarm hair isn’t discussed as much as women’s, in situations where the underarms are exposed—such as at the gym, while swimming, or when taking photos—keeping them clean and fresh can make your overall appearance look neater, and you’ll have less to worry about when wearing sleeveless shirts or taking off your jacket.
Improve Dullness and Rough Texture
Removing hair by shaving or plucking can easily lead to keratinization of the hair follicles and pigmentation, making the skin appear dull and rough. Laser hair removal uses photothermal energy to destroy hair follicles. After multiple sessions, it can achieve long-lasting hair reduction without repeatedly subjecting the skin to physical irritation. As you undergo several sessions, the skin in your underarms will also become more even and refined.
How does laser underarm hair removal work?
Laser hair removal works by taking advantage of the fact that melanin absorbs light and energy. Light of a specific wavelength penetrates the surface layer of the skin; once absorbed by the melanin in the hair follicles, it is converted into heat energy, which destroys the follicle’s growth structure and prevents the hair from regrowing normally.
Hair growth is divided into three phases: the anagen (growth) phase, the catagen (transition) phase, and the telogen (resting) phase. Only hair follicles in the anagen phase respond best to laser treatment. This is why laser hair removal isn’t a one-time procedure; it requires several sessions spaced a few weeks apart to gradually target hair follicles in different growth phases, ensuring more complete results.
What are the different methods of underarm hair removal?
Before deciding whether to undergo laser treatment, the most practical first step is to understand what options are available. Below, we’ve compiled a list of five common procedures and analyzed their duration, cost, and pros and cons.
Shaving with a razor
Shaving off surface underarm hair directly with a razor or epilator is the most convenient and least expensive method, but it only removes the hair visible on the skin’s surface. As a result, new hair usually grows back within 1 to 3 days, and the friction from the blade can easily cause nicks, folliculitis, or ingrown hairs.
Removing Underarm Hair with Tweezers
Using tweezers to pluck hairs from the root provides longer-lasting results than shaving—about 1 to 2 weeks—but since the skin under the arms is thin and sensitive, plucking each hair individually is not only time-consuming but also quite painful, and over time, it can lead to folliculitis or hyperpigmentation.
beeswax
Applying wax to the underarms and then peeling it off removes a large amount of hair at once, with results lasting about 2 to 4 weeks—slightly longer than shaving or plucking. However, the moment the wax is peeled off is quite painful, and the hair must be a certain length for the treatment to work. People with sensitive skin are also more prone to redness and discomfort.
Hair Removal Cream
This treatment uses chemical ingredients to dissolve hair keratin and remove surface hair. It’s simple and painless, but the results are short-lived—lasting only about 3 to 7 days. However, because the ingredients can be quite irritating, people with sensitive skin should perform a patch test first to avoid allergic reactions or redness.
Laser Hair Removal
Laser light is used to damage the growth structures of hair follicles, reducing hair regrowth. However, since hair grows in different phases and the laser primarily targets hair in the “growth phase,” approximately 4 to 6 treatment sessions are typically required. The actual number of sessions varies depending on an individual’s hair growth cycle and physical constitution.
Although it takes multiple sessions to see significant results and achieve “long-lasting hair reduction,” compared to the weekly treatments mentioned earlier, laser hair removal is suitable for those who want to reduce hair growth at its source. However, the initial time and financial commitment are relatively higher, so whether it’s right for you depends on your individual needs and budget.
Extended Reading:Hair Removal Instrument Competition: Poseidon Hair Removal vs Ice, Photon, Wax, Did you really choose the right one?
| Instructions | Maintenance time | Price Range | Advantages | Disadvantages | |
|---|---|---|---|---|---|
| Hair Removal Razor | Remove hair from the surface of the skin | 1 to 3 days | 0 yuan (mainly for tool costs) | Inexpensive, fast, and convenient | Hair tends to grow in the wrong direction; it can irritate the skin. |
| Removal with Forceps | Manually plucking hairs by the root | 1–2 weeks | 0 yuan (mainly for tools) | It lasts longer than a scraper | Time-consuming and very painful |
| Waxing | Apply hot beeswax, then peel it off | 2 to 4 weeks | 800–1,500 yuan | Uprooted, with a longer duration | Relieve pain, sensitivity, and redness |
| Hair Removal Cream | Chemical Composition of Soluble Proteins | 3–7 days | 300–600 yuan | Painless and easy to use on your own | Highly irritating; likely to cause allergic reactions and inflammation |
| Laser Hair Removal | Thermal energy damages the structure of hair follicles | Semi-Permanent/Long-Lasting | 1,000–3,000 yuan per visit | Long-term growth inhibition | Multiple treatment sessions are required, and the cost per session is relatively high. |
(The price ranges listed above are for reference only; actual costs may vary depending on the clinic, the machine model, and the individual’s hair condition.)
A Comparison of Common Underarm Laser Hair Removal Treatments Available on the Market
If you decide to undergo laser hair removal, it’s important to understand the differences between the various laser methods. Different machines have different energy characteristics and are suitable for different skin tones and hair types; there is no absolute “good” or “bad” option. Below is a summary of several common machine models found in clinics, which will help you ask more specific questions during your consultation.
Alexander
The Alexander laser operates at a wavelength of 755 nm, which is highly absorbed by melanin. It is suitable for people with fair skin and coarse, dark hair, offering fast and efficient hair removal. However, due to the nature of this wavelength’s absorption, it is less suitable for people with darker or tanned skin, and the procedure may be noticeably more painful.
LightSheer 3rd Generation Vacuum Hair Removal
The LightSheer 3rd Generation Vacuum Hair Removal system uses a longer-wavelength diode laser with a wavelength of 805 nm. Combined with vacuum suction technology, it gently lifts the surface layer of the skin, allowing the laser energy to be more precisely focused on the hair follicles while reducing thermal damage to the epidermis and minimizing discomfort.
The LightSheer 3rd Generation Vacuum Hair Removal system penetrates deeper and works well on coarser, darker body hair. If you prioritize comfort during treatment without compromising on effectiveness, the LightSheer 3rd Generation Vacuum Hair Removal system is worth considering.
Triton Hair Removal
Triton Laser Hair Removal combines multiple wavelengths in a single device, allowing parameters to be adjusted according to different skin tones and hair characteristics, making it suitable for a wide range of users. Combined with its exclusive 3P cooling technology, the treatment is virtually painless and highly efficient, making it particularly suitable for men with thick body hair.
Whether you have darker skin, fine and soft hair, or hair follicles of varying depths in different areas of your body, there are flexible treatment options available. For people with uneven hair thickness and more complex skin conditions, this is a relatively comprehensive and reliable choice.
Intense Pulsed Light
Intense Pulsed Light (IPL) is not a single-wavelength laser, but rather a light source with a broader spectrum (590–1200 nm), its energy is more dispersed, making it gentler than laser hair removal. It requires more treatment sessions to see noticeable results and is better suited for people with fine, soft hair, those with budget constraints, or those who are more sensitive to laser energy.
| Wavelength Type | Suitable for skin tones and hair colors | tenderness | recovery period | Recommended Number of Treatments | |
|---|---|---|---|---|---|
| Alexander | 755nm | Fair to medium skin tones / Coarse, thick hair | Moderate to Severe (marked stinging sensation) | 1–3 days (mild redness) | 6–8 times |
| LightSheer Vacuum Hair Removal | 805 nm | Normal to darker skin tones / All hair types | Low (Vacuum Suction for Pain Relief) | 1 day (virtually no recovery time) | 6–8 times |
| Triton Laser | 755 nm + 810 nm Dual Wavelengths | All skin tones (including olive) / all hair textures and shades | Extremely low (patented 3P cooling technology) | 1 day (high comfort level) | 4–6 times |
| Intense Pulsed Light (IPL) | Combined Beam (590–1200 nm) | Fair skin tone / Normal hair | Medium (warm to hot sensation) | 1–2 days | 8 to 10 times or more |
Precautions Before and After Underarm Laser Hair Removal
If you’ve ever suffered from recurring folliculitis or have sensitive skin, you might be hesitant just at the mention of “laser,” but there’s really no need to worry too much. In most cases, as long as you discuss your condition thoroughly with your doctor beforehand and choose the right laser model and energy settings, you can still undergo the treatment. The following precautions can help you make an initial assessment of your own situation.
Who Should Not Undergo Laser Underarm Hair Removal?
- People with photosensitivity or those taking photosensitizing medications.
- The treatment area has an open wound, acute eczema, or folliculitis.
- Has recently been exposed to prolonged sunlight and is currently sunburned.
- Individuals with immune system disorders or a predisposition to keloids should consult a physician for an evaluation before making a decision.
Pre-operative Note
Before laser hair removal, try to avoid sunburn and trim the hair short (leaving about 1–2 mm). We do not recommend waxing or plucking beforehand, as the laser may not be able to target the hair effectively. If you have recently used any photosensitive medications or skincare products, be sure to inform your doctor.
It is especially important to note that you should not remove hair at the root with tweezers or wax before laser hair removal; instead, you should leave the hair at a certain length so that it can absorb enough laser energy. If the hair is removed at the root, there will be no hair shaft in the follicle, and the laser light will not be absorbed, the effectiveness of the treatment will be significantly reduced.
Post-Operative Maintenance
Within 24 hours after laser hair removal, the skin under your arms may become slightly red. This is normal. We recommend moisturizing thoroughly and avoiding scratching. If you experience discomfort, you can apply an ice pack to relieve the symptoms.
In addition, after laser hair removal on the underarms, it is recommended to wait at least 24 to 48 hours to ensure there is no redness, stinging, or inflammation before using antiperspirant or deodorant. If the skin still feels warm or has minor abrasions after the treatment, using these products too soon may cause irritation or an allergic reaction.
iRexin Clinic: Case Study on Underarm Laser Hair Removal with the Poseidon Laser
1. Customer Identification and Referral
Male, sales professional. He frequently visits clients and attends meetings, and given Taiwan’s hot and humid climate, he tends to sweat profusely when he’s busy at work. Because he has relatively thick underarm hair, it not only affects his overall neat appearance but also makes him more self-conscious about his underarm hair and overall image when interacting with clients while wearing light-colored shirts or short-sleeved tops in the summer.
Considering the need to maintain a professional and neat appearance for work, and given the inconvenience of long-term shaving and waxing, I decided to visit Arixin Clinic for a consultation on laser underarm hair removal.
2. Doctor's Diagnosis
After evaluating the patient’s skin tone and underarm hair condition, the physician recommended “Triton Laser Hair Removal” as the treatment method for underarm hair removal.
The doctor explained that the Triton laser hair removal system, manufactured by InMode in Israel, combines dual-wavelength technology—755nm Alexandrite laser and 810nm diode laser—to tailor treatment to the specific condition of the hair. In addition, the device features patented 3P triple-cooling technology, which helps reduce skin warmth and discomfort during treatment.
3. Customized Treatment Plans
Based on the patient's skin tone and the thickness of their underarm hair, the doctor plans the following treatment steps:
- Pre-treatment Preparations:Shave the underarm hair completely before your treatment session, as directed by your doctor, to avoid interfering with the laser treatment.
- Skin and Hair Assessment:On the day of the treatment, the doctor will examine the skin tone and hair thickness in the underarm area to determine the appropriate treatment parameters.
- Dual-Wavelength Laser Hair Removal:Use the Triton laser, combined with a 755-nm Alexandrite laser and an 810-nm diode laser, for underarm treatment.
- Cooling and Soothing:The treatment process incorporates 3P Triple Cooling Technology to reduce heat sensation and discomfort during the procedure.
- Treatment duration:A single underarm treatment session lasts approximately 10 to 20 minutes, and no additional anesthetic was used during the procedure.
- Postoperative Care:After the treatment, apply an ice pack to soothe the area, and be sure to use extra sunscreen and avoid taking baths or using saunas for the time being. If any hair remains, you may shave it off yourself, but avoid plucking it.
4. Treatment Outcomes and Progress
- Changes in Appearance After Treatment:As can be seen from the before-and-after photos, the previously thick underarm hair has become sparser, and the underarms look much neater overall.
- Plan for Follow-up Treatment:The patient is currently continuing with follow-up hair removal treatments according to the physician's recommended schedule, while monitoring hair regrowth and the progress of the treatment.
In addition to the underarms, men can also get laser hair removal for their beards:Beard Laser Hair Removal Costs: How to Calculate the Price and Where to Spend the Money in One Article
Frequently Asked Questions About Underarm Laser Hair Removal
Does laser underarm hair removal hurt?
Most people describe the sensation of laser hair removal as similar to a rubber band snapping lightly against the skin. The level of pain varies from person to person and depends on individual pain sensitivity, the type of machine, and the energy settings.
Currently, most models are equipped with cooling systems or vacuum suction to help reduce pain. We recommend discussing your specific experience directly with your dentist during your consultation so adjustments can be made as needed.
Is laser hair removal for the underarms permanent?
Laser hair removal can achieve what is medically referred to as “long-term hair reduction,” meaning that after completing the full course of treatment, most people will experience a noticeable reduction in hair, as well as hair that becomes finer and lighter in color. However, because each person’s physiology and hormonal status differ, a small amount of hair may still regrow; therefore, the term “permanent hair removal” is not entirely accurate.
How often should I get laser hair removal for my underarms?
Laser hair removal is most effective on hair in the anagen phase; however, because hair follicles have different growth cycles, treatments are spaced 4 to 6 weeks apart to gradually target follicles in various phases. The actual interval between treatments will be adjusted based on the doctor’s assessment of hair growth.
Will my underarms darken after laser hair removal?
No. Under normal circumstances, laser hair removal does not cause the skin to darken, but temporary hyperpigmentation may occur if post-treatment care is inadequate, if you are exposed to the sun, or if you scratch the area. As long as you use sunscreen and keep the skin moisturized, this reaction will usually fade gradually.
How soon after laser hair removal can I use antiperspirant or exercise?
We recommend waiting at least 24 hours, until the redness has subsided, before applying antiperspirant or engaging in strenuous exercise, to prevent sweat and chemical ingredients from irritating the skin immediately after the treatment.
Can people with folliculitis or sensitive skin undergo laser hair removal?
It is not recommended. If you have acute folliculitis, an open wound, or inflammation in the underarm area, it is advisable to treat and resolve the condition first before deciding whether to undergo laser treatment. While laser treatment is not contraindicated for sensitive skin, it is recommended that you discuss your skin condition in detail with your doctor beforehand so that the energy level can be adjusted and the appropriate laser device selected, thereby reducing the likelihood of post-treatment skin discomfort.
Can laser hair removal under the arms help reduce excessive sweating?
There’s no way around it. Laser hair removal primarily targets hair follicles and does not affect the function of sweat glands, so it cannot be used as a treatment for underarm hyperhidrosis. However, after reducing underarm hair, some people may find that their underarms feel drier and that sweat is less likely to cling to the hair.
Recommended Laser Underarm Hair Removal in Taichung | Arixin Clinic
Want to say goodbye to the discomfort of heat and odor caused by thick underarm hair? Taichung Arixin Clinic offers treatments including LightSheer 3rd Generation Vacuum Hair Removal、Triton Hair Removal...and other laser hair removal treatments. During your consultation, the doctor will first assess your skin condition, hair characteristics, and past hair removal experiences, and then work with you to discuss the appropriate laser type and treatment plan.
Whether you want to save time on your daily skincare routine, address issues like heat and odor, or are concerned about whether laser treatments are suitable for sensitive skin or those prone to folliculitis, book a one-on-one consultation with a professional doctor right away. Get all your questions answered before deciding whether to begin the treatment.