How Long Does Underarm Laser Hair Removal Last?

Youmna Rehman • July 28, 2025

If you're tired of constantly shaving, waxing, or plucking underarm hair, laser hair removal might sound like a dream come true. But before you commit, you probably have one big question: how long does underarm laser hair removal actually last? Is it permanent? Does the hair ever grow back? Let’s dig into the facts, break down the science, bust myths, and help you decide if it’s worth the investment.


What Not to Do Before and After Underarm Laser Hair Removal


What Is Underarm Laser Hair Removal?

Laser hair removal works by using concentrated light beams (lasers) to target and destroy the hair follicle. The pigment in the hair absorbs the light, which damages the follicle enough to delay future growth.

Underarm laser hair removal specifically targets the armpit region, a small area that responds well to treatment due to its relatively coarse and dark hair (which lasers love).


So, How Long Does It Really Last?

It depends on your hair type, skin type, hormone levels, and number of sessions.

Laser hair removal is not always 100% permanent for everyone. However, it significantly reduces hair growth—often by 70% to 90% after the full course of sessions.

Here’s a general timeline:

  • After one session: You’ll likely notice slower regrowth and some patchiness.
  • After 6–8 sessions: Most people experience long-term hair reduction, with many enjoying smooth underarms for months or even years.
  • Maintenance sessions: Some people need a touch-up once or twice a year to stay smooth.



What Research Says

According to a study published in the Journal of Clinical and Aesthetic Dermatology, most patients experience a significant reduction in hair count after a series of laser treatments. The study emphasized that long-term results are best maintained with periodic maintenance treatments, especially in hormone-sensitive areas like the underarms.

Another clinical review from the American Society for Dermatologic Surgery notes that “laser hair removal offers lasting hair reduction rather than complete hair removal” and that results vary based on the technology used (e.g., diode, Alexandrite, Nd:YAG lasers) and individual characteristics.


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Does Underarm Hair Grow Back After Laser?

Yes, but not the same way it used to.

Laser hair removal doesn’t destroy all hair follicles—some may be damaged, not completely eliminated. Over time, some follicles can recover, especially if triggered by hormonal changes, such as pregnancy, PCOS, or even stress.

However, hair that grows back is often:

  • Finer
  • Lighter
  • Less dense
  • Slower to return


What Reddit Users and Real People Say

We gathered comments from users on Reddit’s skincare and beauty threads who’ve undergone underarm laser hair removal:


“It’s been 2 years since my last session and I’ve only had a few fine hairs grow back. Totally worth it.”
“I still shave once in a while, but it’s like once every few months and takes 5 seconds. My underarms are 90% hair-free.”
“After my 6 sessions, I stayed smooth for about a year, then did a touch-up. Haven’t shaved in ages.”

How Many Sessions Do You Need for Long-Lasting Results?

Most clinics recommend a course of 6 to 8 sessions, spaced about 4 to 6 weeks apart. Why?

Because your hair grows in cycles—anagen (growth), catagen (transition), and telogen (rest). Laser is only effective during the anagen phase, so multiple sessions ensure you catch every hair at the right time.


How Many Sessions for Underarm Laser Hair Removal?


Factors That Affect How Long It Lasts

1. Hair Color and Thickness

The darker and coarser your hair, the better the laser works. Light, fine, or grey hair may not respond as well.

2. Skin Tone

Certain lasers work better for specific skin tones. For example:

  • Diode and Alexandrite: Great for light to medium tones
  • Nd:YAG: Better suited for deeper skin tones

3. Hormonal Health

Hormonal imbalances (like PCOS) can cause persistent regrowth. In such cases, more frequent maintenance may be needed.

4. Quality of the Laser Machine and Technician Skill

Results can vary drastically depending on the clinic’s technology and your technician’s experience. Medical-grade lasers generally provide better, longer-lasting outcomes.


Is Underarm Laser Hair Removal Permanent?

It’s more accurate to call it permanent hair reduction, not removal. Some follicles are destroyed permanently, while others may be only temporarily disabled.

With proper sessions and maintenance, you can enjoy hair-free underarms for   years, with just occasional touch-ups.


How to Make the Results Last Longer

  • Stick to your full session plan. Skipping sessions means you may not target all the hairs effectively.
  • Avoid waxing or plucking. These remove the hair root, which the laser needs to target.
  • Use SPF if underarms are exposed. Laser-treated skin is more sun-sensitive.
  • Stay consistent with maintenance. A yearly touch-up keeps results fresh.


Pros and Cons of Underarm Laser Hair Removal

Pros

  • Long-lasting smoothness
  • Less sweat and odor buildup
  • No razor burn or ingrown hairs
  • Saves time and money long term

Cons

  • Upfront cost
  • Some discomfort during treatment
  • Requires multiple sessions
  • Not always permanent


Cost vs. Duration: Is It Worth It?

A full underarm laser package can cost between $200 and $600, depending on your location and clinic. While it may seem pricey, compare that to a lifetime of razors, shaving cream, waxing, and time—and it starts to sound like a solid investment.


Bottom Line: How Long Will You Stay Hair-Free?

  • Most people enjoy 6–12 months of smooth underarms after the initial course.
  • With touch-ups every 12–18 months, you can maintain long-term results.
  • Some see permanent reduction of 80–90% of hair.


Final Verdict

Underarm laser hair removal is not an overnight miracle, but with the right expectations and commitment, the results are truly life-changing. If you're looking for a semi-permanent solution that saves time and stress in the long run, it’s absolutely worth considering.

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Laser hair removal is growing rapidly in popularity, and the underarms are one of the most common treatment areas. It’s quick, convenient, and can save you from years of shaving, waxing, and irritation. But before booking your f irst session, there’s one question most people ask: How much does underarm laser hair removal actually cost? This guide breaks down the average price, what aff ects the cost, and whether it’s worth the investment in the long run. What Is Underarm Laser Hair Removal? Underarm laser hair removal is a cosmetic procedure that uses laser energy to target and destroy hair follicles in the armpit area. Over time, this process reduces hair growth significantly and often permanently. It’s popular because the underarm area is small, making treatments fast (usually 5–10 minutes), with fewer sessions required compared to larger areas like legs or back. Does Underarm Laser Hair Removal Really Work? Average Cost of Underarm Laser Hair Removal Prices vary by location, clinic, and individual needs, but here’s what you can generally expect: Per-Session Cost (USD) Low end: $50 – $75 Average: $75 – $150 High end (luxury clinics or dermatologists): $150 – $250 Package Deals Many clinics offer discounted packages if you purchase multiple sessions up front: 6-session package: $300 – $800 total 8-session package: $500 – $1,200 total Because most people require 6 to 8 sessions for optimal results, packages often offer better value in the long run. Factors That Influence Cost Several elements affect the final price you’ll pay for underarm laser hair removal: 1. Location Clinics in metropolitan cities or affluent areas tend to charge more. Prices may be lower in smaller towns or countries with a lower cost of living. 2. Type of Laser Alexandrite and Diode lasers (common for lighter skin tones) and Nd:YAG lasers (safer for darker skin tones) have different costs. Advanced or newer laser technology may come at a premium. 3. Clinic Type Dermatology clinics or medical spas with certified professionals may charge more than standard salons, but the service is often more reliable and safer. 4. Technician Experience Highly experienced or licensed technicians may cost more but can reduce the risk of side effects like burns or hyperpigmentation. 5. Hair Type and Skin Tone Coarse, dark hair on light skin usually responds better to lasers, often requiring fewer sessions. People with lighter hair or deeper skin tones may need more sessions, affecting the overall cost. Do You Need Numbing Cream for Laser Hair Removal? Is It Cheaper Than Waxing or Shaving? Although laser hair removal has a higher upfront cost, it can be more cost-effective in the long run. Let’s compare: Waxing Costs: Underarm waxing costs $15 – $30 per session If done every 4 weeks, that’s $180 – $360 per year Over 5 years, you spend $900 – $1,800 Shaving Costs: Razors, shaving cream, and exfoliation tools may cost $5 – $10 monthly That’s $60 – $120 per year , or $300 – $600 over 5 years Plus: the time and irritation of daily or weekly shaving Laser Hair Removal: Average 6–8 sessions over a year : $500 – $800 Maintenance sessions every 12–18 months: $100 – $200 No more razors, wax appointments, or constant upkeep In most cases, laser hair removal pays for itself in just a couple of years—and saves you time and effort, too. Can Insurance Cover It? In most cases, laser hair removal is considered a cosmetic treatmen t and is not covered by insurance. However, if hair growth is linked to a medical condition (like PCOS or hirsutism), some patients may qualify for partial reimbursement depending on the provider and the plan. It’s worth checking with your insurance company and getting a note from your doctor if your hair growth is tied to a health issue. What’s Included in the Cost? A good laser package should include: Consultation: Skin and hair assessment Patch test: To check for skin sensitivity or allergic reactions Actual sessions: Performed with FDA-approved equipment Post-care advice: Products or steps to reduce irritation or pigmentation Some clinics may also offer: Numbing cream (optional and may cost extra) Touch-up sessions at a discounted rate Flexible scheduling or rescheduling with no penalties Always ask what’s included before committing to a package. Can You Find Cheaper Options? Yes, but cheaper isn’t always better. Be cautious of: Unlicensed technicians or shady salons Outdated or unsuitable laser machines Lack of proper safety protocols Look for clinics that offer: Transparent pricing Real before-and-after results Clean facilities and patch testing Trained, certified staff If a deal seems too good to be true, it often is. Poorly done laser treatment can result in burns, scarring, and ineffective results—leading to extra costs later on. Final Thoughts: Is It Worth the Investment? Underarm laser hair removal can absolutely be worth it if you’re seeking long-term hair reduction, smoother skin, and freedom from daily grooming. While it isn’t cheap upfront, the results can last for years and improve both comfort and confidence. Take the time to research providers, compare packages, and ask the right questions during your consultation. With the right laser, technician, and care plan, you’ll likely find the investment worth every penny.
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