The 6 BEST Laser Caps & Hair Growth Helmets [2021 Reviews]

Can a helmet or a cap with a bunch of tiny light bulbs in it stop your hair loss and even regrow thicker, fuller hair?

Do laser caps and hair growth laser helmets work?

According to science, the answer is YES. That’s why many doctors and hair restoration specialists prescribe a laser cap to their patients.

Low-level laser therapy has been clinically shown to effectively treat hair loss (androgenetic alopecia), prevent receding thinning hair, and regrow thicker, fuller hair – in 3-6 months.

best laser caps and laser helmets for hair growth

This post contains affiliate links. Click here to read my affiliate policy.

And the best part?

LLLT is a non-invasive, painless, and completely safe way to stimulate hair follicles to grow thicker, fuller, and even more pigmented.

(The many studies are listed at the end of the post).

In a hurry?
Jump to the BEST laser cap review

In this post, you’ll find the 6 best FDA-cleared laser caps/helmets for hair regrowth, their pros and cons, and a full comparison between them – to help you make the best choice for your needs.

Are Laser Hats/Helmets PROVEN to Regrow Hair?

A 2019 study published in Lasers in Medical Science found that a laser therapy helmet increased hair thickness and covered bald patches in men and women with androgenetic alopecia. Similarly, a 2018 study in the Indian Journal of Dermatology, Venerology and Leprology linked low-level laser therapy to improved outcomes and image satisfaction in androgenetic alopecia patients. (WebMD)

All the laser caps you’ve found here have been clinically shown to:

1. Grow new hair.

2. Double the follicle diameter of existing hair (reverses miniaturization).

3. Slow (and even stop) hair loss.

how laser regrows hair

(See EXACTLY how red light therapy for hair loss works!


If you truly want it to work (and I know you do) – you’ll have to be consistent with your home treatments. According to dermatologist Dr. Anna Chacon, it is ideal to repeat the treatment routinely for best results. “The hair cycle lasts every three months, and about 15% of our hair is always in a shedding mode”.

Can you do that if the result is new, shining baby hair?

Of course you can.

The 6 Best Laser Caps & Laser Helmets for Hair Growth 

Below you’ll find the top 6 laser hair growth caps (helmets) compared, and below you’ll find our review and pros and cons of each laser hair growth home device.

 Lasers/LEDsTreatment TimeTrial Period/WarrantyPrice
HairMax Laser Cap

🥇Best Overall
Jump to Review
272 lasers15-30 minutes - 3 times per week1 year trial
2-year warranty
$1899 at HairMax
illumiFlow Laser Cap

Best Value
Jump to Review
148/272 lasers
15-30 minutes - 3 times per week6 months trial
5-year warranty
$799 at Walmart
Kiierr Laser Cap

Longest Trial
Jump to Review
148/272 lasers30 minutes - every other day7 months trial
2-year warranty
Save $80 with code K80
at Kiierr
HairMax Laser Band
82 lasers90 seconds - 3 times per week1 year trial
2-year warranty
$799 at HairMax
iRestore Laser Helmet
21 lasers
30 LEDs
25 minutes - every other day6 months trial
1-year warranty
Best Price on Amazon
Theradome Laser Helmet
80 lasers20 minutes - 2 times per week6 months trialCheck Price on Amazon

1. HairMax 272 PowerFlex Laser Cap Best Overall

hairmax laser cap review
HairMax laser cap – check price at HAIRMAX  

With 272 medical-grade lasers, full scalp coverage, and a total output of 1360 mW’s, the HairMax PowerFlex laser cap is the best value hair growth helmet of 2021.

The PowerFlex flexible design, which looks like a regular sports cap, is 100% portable and comes with a rechargeable battery pack.

hairmax 272 powerflex laser cap

The silicone inserts (water-resistant for easy cleaning) conceals the 272 lasers and internal circuitry while protecting the diodes and keeping them clean.

Treatment time is 15-30 minutes – 3 times a week – and you can choose a constant or pulsating laser with the dual operating mode.

Dual operating mode technology for a choice of constant or pulsing laser lightwave for 15 minute or 30 minute treatment time.

Laser 272 PowerFlex treatments are needed just 3 times weekly.

hairmax laser cap before and after

The HairMax laser cap helps restore your hair’s natural growth cycle by promoting blood circulation and oxygen while boosting DHT elimination (high levels of DHT can cause hair loss) – resulting in increased density, fullness, and growth.

HairMax PowerFlex Pros

  1. Discrete hair treatment – flexible sports cap design
  2. 100% portable
  3. Powerful – 1360 mW’s output
  4. An easy to use the controller with an illuminated timer and battery level indicator
  5. 1-year money-back guarantee
  6. FDA-cleared
  7. 2-year warranty


  1. Expensive

HairMax PowerFlex cost – check today’s price at HAIRMAX 

👉 Lower-cost alternative – The New HairMax LaserBand 82 – only 90 seconds treatments – 3 times a week!

hairmax laser band comfotflex
HairMax Laser Band ComfortFlex – check price at HairMax
We’ve compared the 3 most popular laser caps of 2021 – HairMax vs. Illumiflow vs. Kiierr – see our detailed comparison before you choose!

2. illumiFlow 272 Laser Cap Best Value

illumiflow laser cap review
Illumiflow Laser Cap – 272 lasers – $799 at Walmart

The illumiFlow hair growth cap promises to “regrow your confidence – or your money back”, offering 6 months money-back guarantee and a 5-year warranty on both laser caps – one with 148 lasers, and the other with 272 medical lasers.

Results are expected within 4-6 months of treatment, and the first result to expect is a reduction in hair loss, followed by new, thickened hair growth.

illumoflow laser hair cap before and after
illumiFlow before and after

The FDA-cleared illumiFlow is also designed as a sports cap and is 100% portable and discrete.

It’s simple to use: all you have to do is connect the cap to your charged battery pack, place it on your head (it has full coverage), and flip the switch to start your 15-30 minute treatment.

The 272-laser model costs less than half of the HairMax PowerFlex but offers no choice between pulsing/constant light, and the total output is not mentioned in its specs.

Want to see an Illumiflow unboxing? check it out below:

illumiFlow 272 Laser Cap Pros

  • Discrete treatment thanks to the sports cap design
  • Lasers are calibrated to 650nm, the optimal wavelength for hair growth
  • Flexible and comfortable
  • A lot of lasers, lower cost than the HairMax
  • 6-month money-back guarantee
  • 5-year warranty
  • 15-30 minutes 3 times a week
  • up to 20,000 treatment sessions
  • Free shipping at the official site


  • It May not fit smaller heads perfectly

illumiFlow laser cap cost – we recommend buying from Walmart

👉 Lower-cost alternative – the illumiFlow 148 laser cap, which costs $200 less than the 272 model.

3. Kiierr Laser Cap Longest Trial

kiierr laser cap for hair growth reviews
Kiierr laser cap – remarkable customer results – Save $80 with code K80 – on the official site!

The Kiierr laser cap (FDA cleared) also has 272 medical-grade lasers concealed inside a sports cap, and guarantees stopping hair loss dead in its tracks within 30-90 days, followed by regrowth of new, thicker hair within 180 days.

This brand offers an even lengthier risk-free trial period, and you can get a full refund up to 7 months after your purchase.

The 2-year warranty includes replacement with a new device in case of any malfunction, with free shipping.

The Kiierr brand offers 2 models – one with 148 lasers, and the other with 272 lasers, and 2 complete hair regrowth bundles – with DHT blocking shampoo, DHT blocking vitamins, and hair growth conditioner.

kiierr laser cap reviews
Kiierr laser cap before and aftersee all customers pictures

👉 We were very impressed with the genuine customer reviews and their before and after pictures, showing remarkable hair growth!

The DHT-blocking supplement is 100% natural and contains Saw Palmetto, Horsetail Extract & Zinc formula to help slow/inhibit 5-AR enzyme conversion to DHT (which is suspected to cause hair loss).

Treatment time is 30 minutes every other day, and the cap is 100% hands-free and portable.

Kiierr laser cap costSave $80 with coupon code K80- on the official site.

4. iRestore Laser Helmet for Hair Regrowth 

irestore laser helmet review
iRestore hair growth helmet – best price on Amazon!

The FDA Cleared iRestore hair loss laser treatment helmet was designed for both men and women with a receding hairline, balding and thinning hair.

And that’s not all:

iRestore was proven to promote significant hair growth in a 2017 clinical study.

When this 16-week study ended, 100% of men and women saw a visible improvement in hair growth, with more than 43% increase in hair count, after using the iRestore for 30 minutes every other day.

irestore before and after
iRestore before and after

The 51 medical-grade lasers and LEDs inside the helmet radiate light energy that is absorbed by the hair follicles to enhance cell metabolism rate and reactivate follicles to stimulate hair growth.

The best part?

You can expect results in 3-6 months, and if you don’t see any visible improvement in your hair growth – you can send it back for a full refund.

  • iRestore specs: 21 medical-grade lasers (power: <5mW – Low-Level Laer) & 30 LEDs (650 nm – proven optimal wavelength for hair growth).

(LEDs blink for more stimulation while lasers stay constant)

  • Size: 10.7 x 9.2 x 6.1 inches
  • Weight: 1.7 pounds
  • Power: 110-220V (comes with AC adapter)

iRestore Laser Hair Helmet Pros:

  1. Excellent coverage – the laser diodes and LEDs are speckled all over the interior of the helmet.
  2. No over-use risk – built-in automatic shut off after 25 minutes. You can also shut off the unit at any point during hair treatment.
  3. Eye damage prevention – The iRestore Laser Hair Growth helmet has two sensors placed inside the cap, to prevent the cap from emitting laser unless it is fitted on your head.
  4. One year warranty and 6 months money-back guarantee
  5. Excellent customer service
  6. Long shelf life – the iRestore was tested in a world-renowned lab to last at least 5 years.
  7. Fits most head sizes comfortably – the system will generally fit a head circumference range of 21 to 24 inches. There’s an adjustable component inside that allows for proper fit.
  8. Can be used along with any other hair loss treatments (we recommend trying Jamaican Castor oil).
  9. It is very comfortable to use – it has small cushions all around it so it’s completely painless to use it.

✅ iRestore laser helmet cost – When we check this page on Amazon, we often find the iRestore on a sale price. If you find it for less than $500- it’s a good deal.


  1. Low power compared to the top competitors
  2. The helmet does not cover the backside and the side of the head directly above the ears. However, (Low-Level Light Therapy) has a cascading effect that, if given the time, will result in improvement outside the immediate treatment area to benefit the entire scalp.
  3. Needs to stay plugged in during treatment. However, you can go completely mobile if you buy the rechargeable battery pack (very much worth the spend!)
<strong>Do you have more questions? need help?</strong>
Our Facebook page is the best place to message us and get quick and personal answers! 🙌

5. iGrow Laser Hair Growth Helmet

igrow laser helmet review
iGrow laser helmet – check today’s price

Here’s something interesting:

The FDA approved iGrow is an almost identical device to the iRestore laser helmet in terms of optical and electronic function (21 laser diodes, 30 LEDs – 650-670 nm, delivered at 3-4 joules per cm2).

Actually, All the technology is the same except for the design and the audio earphones you can see in the image.

You even get the same 6-month money-back guarantee if it doesn’t work for you.


It’s also been proven to increase hair count (by 36%) in 16 weeks – in two published clinical studies.

igrow hair growth helmet before and after


The iGrow price is lower than the iRestore.

  • Size: 12.2 x 5.9 x 9.8 inches
  • Weight: 3.4 pounds (double the iRestore weight on your head)
  • Power‘: 110v-220v (comes with AC adapter)

iGrow pros

  1. Lower price than all laser caps We’ve found
  2. Comfortable and easy to use
  3. Good for travel – very easy to take through airports and use while away from home
  4. The headphones are of high quality and the sound is excellent
  5. Automatic shut off after 25 minutes
  6. Excellent customer service, available at all times
  7. From what I found here, many users insist that it works if you are consistent. You can see their before and after pictures too.


  1. Low power compared to the top competitors
  2. Amazon users rate this one lower than the iRestore.

✅ iGrow hair helmet cost – The iGrow sells for $549 on the official website. But on Amazon, we often find it for much less. Check this page to see today’s price. If it’s less than $430 – grab it.

6. Theradome Hair Growth Helmet

theradome laser helmet for hair loss
Theradome – check today’s price

The Theradome has 80 medical-grade lasers (678 nm low-level laser) to be exact – and no LEDs.

This means that potentially, you will get quicker and better results than the iGrow and the iRestore.

laser helmet before and after
Theradome before and after example
If used as directed, Theradome claims to stop hair loss within 18-26 weeks, to regrow hair within 28-52 weeks, and to provide fuller, thicker hair after 100 weeks.

Also, the Theradome is cordless (comes with rechargeable batteries), meaning you are free to walk around with it.

And that’s not all:

Theradome is manufactured in the USA and recommended by hair rejuvenation experts such as Bosley and HairClub.

  • Size: 11.8 x 7.9 x 5.5 inches
  • Weight: 1 pound
  • Power: 110v-220v

Theradome Laser Hair Helmet Pros

  1. 80 laser diodes and full coverage (you can get the 40 LEDs model – the Theradome Evo laser hair growth device – for about half the price on Amazon)
  2. Portable hair growth device – operates on rechargeable batteries and you can walk around while using it.
  3. Counts your treatments – an automated treatment counting system keeps track of the total number of treatments you’ve undergone.
  4. Reaches all areas, including above the ears
  5. Shorter treatment time – only 20 minutes – twice a week
  6. Lightweight (only 1 pound) – doesn’t feel heavy on your head
  7. Automatic shut off after 20 minutes
  8. Fits all head sizes – it has foam inside that can be used for smaller head sizes.
  9. 1-year warranty, 120-day money-back guarantee for US citizens.


  1. Low power
  2. Mixed reviews about customer service
  3. Won’t work for advanced hair loss (dead hair follicles)
  4. Much more expensive than the last two

 ✅Theradome cost – When we check this page on Amazon, we sometimes (not often though) find a sale price.


Through our research, we have concluded that the best laser caps for the money are the illumiFlow laser cap or the Kiierr Laser cap.

Compare laser helmets vs. Laser combs HERE – what’s better for hair growth?

 Capillus Laser Cap Review: Does it Work? 

Capillus bosley laser cap review
The Capillus82 laser cap – not our first choice

The Capillus company, which sells 3 low-level laser hats/caps, claims that you’ll regrow your hair – in only 6 minutes a day.

And the price matches the claim – almost $900 for the 82-laser one, and almost $2000 for the 282-laser cap.

(Forget about the pro model – with 272 lasers – which costs about $3000. 🙄)

Through our research, we’ve found that there is very little evidence to support the efficacy of the Capillus caps (they’ve conducted no clinical trials), and buyer reviews are less than stellar.

👉 You can see all the Amazon buyer reviews HERE.

Yes, it’s completely mobile, and you can use it outdoors with no one knowing your little secret.


We conclude that if you’ve never tried laser hair growth treatments and proved that this home technology works for you, the huge investment may not be worth it.


How to use a Hair Growth Helmet Safely

First, always follow the instructions.

Do not be tempted to use the device more than directed – it won’t work better or faster if you do, and the instructions are based on clinical studies that tested the best way to use them to get the best results.

Second, do not stare directly at the laser lights – they are very bright.

Red light therapy will not heat your scalp, but tingling sensation after use is normal (it happens because it increases blood flow in your scalp – which is good.)

Laser Caps FAQ

There are literally dozens of frequently asked questions about LLLT for hair loss home treatments, here are the answers to most of them:

What is a laser cap?
A laser cap (hair growth helmet) uses safe, low-level lasers/LEDs to energize hair follicles and spur new, natural hair growth, by boosting blood circulation to the hair follicles.
How long should you use a hair growth helmet?
Laser helmets treatment time varies greatly, depending on the number of LEDs/lasers. Treatment time ranges from 5-20 minutes per session, 2-3 times a week.
Can laser helmets be used with other hair loss products?
Yes. It can be safely used with other products such as Rogaine and Minoxidil, and in fact, laser therapy can help make these other treatments more effective.
Are laser caps safe?
Generally, laser hair treatment uses low-energy nonionizing safe radiation. Pregnant women should not use them before consulting with their doctor. If you are taking medications that affect skin sensitivity to light, consult with your doctor before use. Do not use LLLT if you have skin cancer on your scalp.
Can Laser Caps cause cancer?
The science-based answer is NO. Laser treatments for hair loss do not cause cancer. More than 2000 clinical studies were conducted on the use of LLLT and all of them have found no DNA mutational effects resulting from treatment. The short UV waves (280 – 400 nm) are the type of waves that have been linked to skin cancer, and they are at a totally different wavelength from red light therapy.

👉 Here’s a study proving red light therapy safe even when skin cancer is present.

Do you have to cut your hair to get the laser to work?
Your hairstyle and length will not interfere with your LLLT home treatment because it has a cascading effect and a systemic effect, which will result in improvement outside the covered treatment area. Some people say that laser combs can reach the scalp better than helmets – because the comb design makes you part your hair and allow the light energy to reach your scalp better.

👉Check out my post about the laser comb.

Do you have to keep using the laser cap to keep the results?
As with any other hair loss treatment (other than hair transplant) – the answer is yes.

In fact, through my research, I’ve found that a few users who thought that the treatment does not work for them, discovered that their hair started falling out when they stopped using it and realized that their helmet actually stopped their hair loss.

Basically, because the follicles have “weakened,” they need constant revitalizing from the lasers (or whatever other treatment you are using).


Once you finish the suggested treatment period, you can cut down to “maintenance” treatments of once or twice per week.

Do laser caps work for dark hair?
Yes, they can work for dark hair. However, you should know that the FDA has not cleared these devices for dark skin. Refer to the Norwood-Hamilton Scale (approved: Class Ila to V) / Ludwig-Savin Scale (approved: Class I to II) and Fitzpatrick Skin Type Scale (approved: Type I to IV) for compatibility.
Can laser caps be used after hair transplants?
Yes, however, it’s advised to wait at least 30 days before you start using it, and consult with your surgeon to be on the safe side.

I truly hope you’ve found my research and tips useful.

Home laser devices can be used not only to regrow hair – but to remove unwanted body and facial hair. Find the TOP home laser hair removal devices HERE.

And now, over to you:

Have you ever tried laser treatments for hair growth? have you tried laser caps before? do you have any other questions? Let me know in the comments below.

To your health and happiness,



Jimenez, J.J., Wikramanayake, T.C., Bergfeld, W. et al. Efficacy and Safety of a Low-level Laser Device in the Treatment of Male and Female Pattern Hair Loss: A Multicenter, Randomized, Sham Device-controlled, Double-blind Study. Am J Clin Dermatol 15, 115–127 (2014).

Avci P, Gupta GK, Clark J, Wikonkal N, Hamblin MR. Low-level laser (light) therapy (LLLT) for treatment of hair lossLasers Surg Med. 2014;46(2):144–151. doi:10.1002/lsm.22170

Hamblin, Michael R. “Mechanisms of Laser-Induced Hair Regrowth.” (2005).

Zarei, M., Wikramanayake, T.C., Falto-Aizpurua, L. et al. Low level laser therapy and hair regrowth: an evidence-based review. Lasers Med Sci 31, 363–371 (2016).

Urysiak-Czubatka I, Kmieć ML, Broniarczyk-Dyła G. Assessment of the usefulness of dihydrotestosterone in the diagnostics of patients with androgenetic alopecia. Postepy Dermatol Alergol. 2014;31(4):207‐215. doi:10.5114/pdia.2014.40925

27 thoughts on “The 6 BEST Laser Caps & Hair Growth Helmets [2021 Reviews]”

  1. I am very interested in trying a Laser hair growth device.
    I am a female and want to use it to boost my hair growth, as I feel my hair is just not growing (and has not been for years). *

    I am wondering, however, do the helmets actually give full coverage? Seems that side of the head and the lower back of the head are not covered by the helmets.
    I have, therefore, considered the combs/brushes – but are they really as effective as the helmets?

    I hope it is possible to get your advice.

    Kind regards,

    • Hi Solly, since the lasers boost blood circulation in and around their location to a certain radius, the entire scalp gets the benefits of it. Brushes are less powerful and require a lot of work – combing the hair slowly – and could take more than 10-15 minutes of “work”. Most people can not keep this routine consistently and thus reduce their chance of seeing results. I hope this helps :)

    • Laser and LED (light-emitting diode) both deliver a certain wavelength that is optimal for hair growth. They differ in speed, transmitting Distance, and cost. The Lasers are more powerful and operate at faster speeds than LEDs, and they can also transmit light farther with fewer errors.

  2. I put toppik hair fibers in my hair everyday. I want to use one of this helmets but I am curious if having fibers in my hair during treatments would “block” the lasers or make them less impactful because there is something in my hair and on my scalp. Or are the lasers powerful enough to just blast through any small amount of blockage to my scalp or hair follicles?

    The simple solution would be to just completely wash them out before I do a treatment, but as I said I put them in everyday and if I am doing treatments at different times, or need to run out after it would be annoying and more costly to reapply the fibers.

  3. It does help. Thank you. One last question please; I have very, very, very thinning hair at my forehead and sides of my head by my ears. Which would you recommend for me, the “I Restore Professional” (which Amazon does not have yet) with 82 lasers or the “Theradome Pro Lit 80” with 80 lazers. Thank you so much for your time and advice.

  4. I am wondering about the Hair Max. It has 246 lasers. Does that make it better than the Theradome?

    • It’s not better, it’s different. The HairMax is a light brush, which means you have to manually comb your hair slowly with it. The Theradome is a helmet, which you place on your head and is hands-free. The red light therapy brushes are better for people with thick hair which may prevent the light from reaching the scalp. The brush allows for the light to get closer to the hair follicles. So, this really depends on the type of your hair. I hope this helps.

  5. None of these companies addresses hat size.

    My hat size is 7-7/8, which is a circumference of 24-5/8″.

    I would be very disappointed and inconvenienced if I purchased a laser cap, it didn’t fit my head and I would have to send it back to the company for a full refund.


  6. There is no such thing as medical grade LED’s. LED’s have no clinical benefit at all and are used as on off switches in Chinese made electronics. With 21 lasers, irestore and igrow are the same, Theradome has almost 4 x the lasers. I’ve had mine for 2 years and I’ve seen constant growth.

  7. I am losing my hair in my temples, and its see through like a cheap wig across my front hair line. I am a 59 year old woman who used to have great hair. My hair line is mimicking male pattern baldness, with it recessing on either side of the center of my frontal hair line. While my temples are thinning out so badly and progressing towards the sides of my hair. My top hair hides it for now. The back of my head is doing great so far. Which device will help the front hair line, front and sides of my head and temple area best?

    • It seems o.k to me, however I don’t know much about it and haven’t found user reviews anywhere. May be a new product. Also I don’t see any info about money back guarantee or warranty. I recommend shooting them an email and asking about it.

  8. I have the RedRestore Growth Cap with 148 lasers. It has only medical grade lasers and zero LEDS. I have seen significant hair growth with the system. The price is incredible for the laser power it offers.

  9. I have a NEW Theradome. It would turn on / charge for six treatments. Bought a new barrery. Turned on / charged for six more treatments.
    Theradome would not warranty the helmet or battery.
    Have no idea if it would help grow hair because it won’t recharge.


    • John,

      If you bought the Theradome from the official website or the authorized store on Amazon – you have a 1-year warranty against defects in materials and workmanship. Did you buy it from the official seller?

    • You say as a con of the theradome: “does not that advanced hair loss (dead follicles)” . No laser treats this. I’m confused why this would be a con of the theradome specifically

  10. As a comment on iRestore, the Black Friday/Cyber Monday price is $495. And they may have sales periodically throughout the year. That said, those suffering from hair loss probably shouldn’t wait for months to delay the purchase of a potentially helpful device… particularly with the money-back guarantee on the table.


Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.