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Powerful Results
Where Others Fall Short

Unlike cheaper alternatives, the Kiierr Laser Cap is designed with 100% laser technology-clinically proven to regrow hair more effectively. With 302 medical-grade lasers and a 7-minute treatment time, it’s a serious solution for those who want real, visible results.

100% Natural
and Safe

No pills, no hormones, and no invasive surgeries. Kiierr uses your body’s natural healing process to stimulate hair growth. With no harmful side effects, it’s the gentle, safe way to achieve thicker, fuller hair.

Love It or
Your Money Back

Ready to give Kiierr a try? We’re confident you’ll love the results, but if for any reason you don’t, we offer a 7-Month Money-Back Guarantee-no questions asked. So why wait? Your best hair is just weeks away.

Trusted By 100k+
Happy Customers

With All Different Types Of Hair Loss

4.7 Based on 495+ Customer Reviews

Trusted By 100k+
Happy Customers

With All Different Types Of Hair Loss

4.7 Based on 495+ Customer Reviews

5.0/5

“As you can see, compared to the Dec. 2022 head-shot photo there has now been substantial regrowth of new hair filling in the previously thinning areas. So, I am very pleased with the results of using the Kiierr 272 Premier Laser Cap. The Kiierr Laser Cap really works! No doubt about it. Highly recommended.”

Brian D

Verified purchase

5.0/5

“I purchased my Kiierr cap in 2020 and it has been a great investment for me and my self-esteem. I use it in combination with topical Minoxidil and it really has helped fill out my thin patches. Customer service is helpful and responsive. I definitely recommend this cap if you are looking to get the best results.”

Thomas P.

Verified purchase

5.0/5

“I was skeptical about the Kiierr’s benefits but after using the product, I’m pleased to say that my hair is fuller and less falls out. I’d endorse this product. Additionally, the customer service is unmatched. –

Fernando T

Verified purchase

5.0/5

“As you can see, compared to the Dec. 2022 head-shot photo there has now been substantial regrowth of new hair filling in the previously thinning areas. So, I am very pleased with the results of using the Kiierr 272 Premier Laser Cap. The Kiierr Laser Cap really works! ”

Brian D

Verified purchase

5.0/5

“As you can see, compared to the Dec. 2022 head-shot photo there has now been substantial regrowth of new hair filling in the previously thinning areas. So, I am very pleased with the results of using the Kiierr 272 Premier Laser Cap. The Kiierr Laser Cap really works! No doubt about it. Highly recommended.”

Brian D

Verified purchase

5.0/5

“I purchased my Kiierr cap in 2020 and it has been a great investment for me and my self-esteem. I use it in combination with topical Minoxidil and it really has helped fill out my thin patches. Customer service is helpful and responsive. I definitely recommend this cap if you are looking to get the best results.”

Thomas P.

Verified purchase


We’re So Confident You’ll Regrow Hair, That We’ll Give You 7 Full Months
to Try the Kiierr Laser Cap Completely Risk Free!

We’re So Confident You’ll Regrow Hair, That We’ll Give You 7 Full Months to Try the Kiierr Laser Cap Completely Risk Free!

4.9rating stars100.000+ Happy Customers

Exclusive OFFER Ends Today!

LIMITED TIME: Get a FREE Laser Comb With Your Purchase

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4.9rating stars100.000+ Happy Customers

Exclusive OFFER Ends Today!

Say goodbye to hair loss and hello to fuller, healthier hair. Order in the next 7 1/2 hours and receive our 4-in-1 advanced hair growth comb

LIMITED TIME: Get a FREE Laser Comb With Your Purchase

Say goodbye to hair loss and hello to fuller, healthier hair. Order in the next 7 1/2 hours and receive our 4-in-1 advanced hair growth comb

OPTIONS:

Pro Cap148 Diodes

Premier Cap272 Diodes

MD Ultra Flex Cap302 Diodes

*What is a diode? Click hereClick here to find the right cap for you.

7 MONTH MONEY BACK GUARANTEE

Order in 7h 27m to get it by Fri, Nov 7 More Info

Kiierr laser caps, powered by our exclusive PureLaser™ technology, utilize only high quality medical grade laser diodes (no LEDs) to deliver precise, effective LLLT at 650 nm for optimal hair regrowth. 

With options of 148, 272, or 302 diodes, and total power outputs of 740 mW, 1,360 mW, and 1,510 mW respectively, Kiierr caps offer targeted stimulation for fuller hair. Simply use the 148 and 272 models for 30 minutes every other day, or the 302 model for 6 minutes daily, and start seeing results in as little as 6–8 weeks, with significant improvements typically visible within 4 to 7 months.

This advanced, FDA-cleared LLLT technology penetrates the scalp to stimulate hair follicles at the cellular level, enhancing blood flow and nutrient delivery to dormant follicles. The result is a revitalized scalp environment that supports natural hair growth cycles, promoting thicker, fuller hair that’s clinically proven to be effective. With over 100,000 satisfied Kiierr customers and a money-back guarantee, there’s no reason to wait. Experience the transformation for yourself and watch your hair thrive!

7-Month Growth Guarantee: Use your laser cap consistently for 210 days. If no growth is seen, return it within 210-240 days for a refund (25% fee, waived if 7 month photo documentation is provided). Registration with a before photo is required within 45 days of receiving the cap. See full policy for details.

Warranty:Kiierr laser caps come with a 2-year warranty, which covers any defects or failures. 

Shipping: Orders normally process within 2-3 business days and are shipped with 2-Day Shipping via USPS Priority or FedEx. However, our current processing time is approximately 7-10 business days due to high order volume. Shipping within the US is free. We ship to all countries and international shipping is $55 USD (plus customs fees charged by FedEx)
 

Read Full Return Policy

You will
receive results
within 6-8 weeks.

During this phase, you can expect about 10% recovery as the initial steps of hair regrowth begin. This stage often focuses on stabilizing hair loss, with noticeable reduction in shedding for most users. Results during this time will vary depending on the degree of hair loss you started with, as those with less advanced hair loss may see quicker signs of improvement.

By this point, you may notice up to 20% recovery, with subtle regrowth and thicker, healthier-looking hair becoming more apparent. Shedding should have significantly reduced, if not stopped completely, as the follicles respond to treatment. Keep in mind that individuals with more severe hair loss may experience slower progress during this phase.

Hair regrowth continues with up to 30% recovery, as new hair begins to fill in thinning areas and existing strands become stronger. Results at this stage depend on the severity of your initial hair loss, with those in the early stages of thinning likely seeing more visible changes compared to individuals with extensive hair loss.

Significant progress occurs beyond this stage, with up to 90% recovery for many users as new growth becomes fuller and more consistent. This phase is where the most noticeable improvements happen, but the timeline will vary based on your unique hair loss pattern and response to treatment.

During this phase, you can expect about 10% recovery as the initial steps of hair regrowth begin. This stage often focuses on stabilizing hair loss, with noticeable reduction in shedding for most users. Results during this time will vary depending on the degree of hair loss you started with, as those with less advanced hair loss may see quicker signs of improvement.

By this point, you may notice up to 20% recovery, with subtle regrowth and thicker, healthier-looking hair becoming more apparent. Shedding should have significantly reduced, if not stopped completely, as the follicles respond to treatment. Keep in mind that individuals with more severe hair loss may experience slower progress during this phase.

Hair regrowth continues with up to 30% recovery, as new hair begins to fill in thinning areas and existing strands become stronger. Results at this stage depend on the severity of your initial hair loss, with those in the early stages of thinning likely seeing more visible changes compared to individuals with extensive hair loss.

Significant progress occurs beyond this stage, with up to 90% recovery for many users as new growth becomes fuller and more consistent. This phase is where the most noticeable improvements happen, but the timeline will vary based on your unique hair loss pattern and response to treatment.

How Kiierr Works

The Kiierr Laser Cap uses 302 medical-grade laser diodes-one of the most powerful & effective
densities available. These lasers emit light at the optimal wavelength for hair regrowth, delivering results that are both safe and effective.

In just 7 minutes a day, the Kiierr Laser Cap works to:

And the best part? It’s completely natural and non-invasive.
No pills, no surgeries, and no side effects.

Fight Hair Loss with Kiierr

 

Join the 100,000+ users who have transformed
their hair and their lives with our scientifically advanced PureLaser™ technology!

Restore Your Hair Today!

Three Simple Steps
To Use The Kiierr Laser Cap

We’ve designed the Kiierr Laser Cap to be as easy and convenient as possible. Follow these three
simple steps to start your journey to thicker, healthier hair

Place The Laser Cap On Your Head

Simply put the cap on, ensuring it fits comfortably and covers the areas where hair growth is needed.

Activate The Laser Cap

Press the power button to start your treatment. The cap’s medical-grade lasers will begin stimulating your scalp.

Relax For 6 Minutes

Sit back and relax while the cap does the work. After the treatment is complete, the cap will automatically shut off.

Our Purelaser™ Technology

Join the 100,000+ users who have transformed their hair and their lives with our scientifically advanced PureLaser™ technology!

Auto Programmed Sessions, Laser-Only Technology, Portable, Maximum Coverage of Scalp

“Theodore J. Daly is a triple board certified dermatologist (Dermatology, Pediatric Dermatology and Dermatopathology) and has a great interest in diseases of the hair. He…”

Theodore J. Daly, MD, FAAD, FSPD,
FASD

Dermatologist

Clinically Proven to
Safely Grow Hair in just
30 Minutes

Just 30 minutes Every Other Day

Place the device on your head, press the on button, and relax. It turns off automatically when done.

Hair care at better savings

Our best-selling and award-winning cap is designed to deliver noticeable hair growth results in significantly less time.

148 Pro Laser Cap ($749)

Fast

272 Premier Laser Cap ($899)

Faster

302 MD Ultra Flex ($1699)

Fastest

Kiierr Laser Cap is an
Affordable Hair Regrowth Option

This advanced technology was once limited to expensive clinics. With Kiierr, grow hair at home with
comfortable and affordable LLLT.

7 Month Growth
Guarantee

Buy our laser caps or bundles risk-free. No results in 7 months? Return for a refund. We’re proud to offer top-notch customer service and easy returns.

ORDER YOURS TODAY RISK FREE!

Suitable For
Men & Women

Users of all hair types & genders have seen
incredible results, regardless of age.

All Skin Types:

Frequently Asked Questions

Will laser therapy work for my type of hair loss?

Absolutely! The great thing about Low-Level Light Therapy (LLLT) is its versatility! Whether you are male or female, 18 or 88, from pattern baldness to hair thinning due to stress or medical conditions like including alopecia areata, hormonal imbalances, telogen effluvium and so much more.

Users of all hair textures and skin tones have seen incredible results, regardless of age. Start your journey to thicker, healthier hair today and see why so many trust Kiierr for their hair growth needs!

We have 4 laser cap options: 148 Pro, 272 Premier, 272 MD Elite, and 302 MD Ultra Flex. Choosing the right cap depends on your specific needs. For early stages of hair loss or those on a budget who are okay with slower, steadier results, the 148 Pro is ideal. If you’re seeking more significant and quicker regrowth, the 272 Premier is our bestseller.

For larger head sizes or extensive coverage, the 272 MD Elite is perfect. Lastly, the 302 MD Ultra Flex offers the fastest results and superior comfort. Ideal for severe hair loss, this model also offers a soft flex fit for maximum comfort.

Results vary, but most users see noticeable improvements within 6-12 weeks. We’re so confident in our product that we offer a 7-month growth guarantee—if you don’t see results, you can return the cap!

Laser therapy is a safe, non-invasive, and natural way to treat hair loss before considering more drastic measures like medications or surgery.

Choosing Kiierr is like joining a family & community committed to hair recovery. Since 2017, we’ve provided top-quality, medical-grade laser caps with a solid 2-year warranty. With our 7-month growth guarantee, you can trust that we’re as invested in your hair journey as you are.

Our exceptional customer service is always ready to support your journey; real people who genuinely care, ready to guide, support, and celebrate your progress with you.

Yes! We offer flexible payment options through Affirm, Afterpay, and PayPal Pay Later, providing easy monthly installments or delayed full payments to suit your financial situation.

  • Affirm allows you to split your purchase into easy monthly payments with interest rates as low as 0% APR.
  • Afterpay allows you to split your purchase into four equal installments, due every two weeks, no interest or fees. PayPal Pay Later, you can choose to pay in full within 6 months with no interest, or make minimum monthly payments with interest.

Just pick what works for you at checkout!

4.9 (2145 reviews)

Bobby T.

A great way to regrow hair without ingesting supplements or using gimmick topical solutions. The ease of use is tremendous and convenient as well. I found it best to pick a consistent time of day to wear the cap every other day and stick with it, so you don't need to worry about forgetting a session. For me it is during lunch break when I know I won't be up and running around. The regrowth was visible and my wife started seeing the results long before I did.

Kent K.

I have been using the Kiierr laser cap for 4 years. Before I started using it I had a really annoying itchy feeling at the crown of my head. Since using Kiierr that itchiness has stopped. In fact when I stopped using it a couple weeks it has returned so I am confident it is from the laser cap. I am sure it has also helped maintain or improve the hair growth on my head as well. Great product.

Stacy J.

I began losing hair after menopause. I was looking for a way to make my hair healthier when I read about the laser cap. I was hesitant about such an expensive purchase, but as you can see from the before and after photos, it made a difference! (The photos are 4 months apart. ) I have been using my cap for 3 1/2 years now.

Kevin K.

I have been using the Kiierr 272 Premium Laser Hat since Oct 2020. I have seen significant hair growth. Others have noticed too, some people even think I've had a hair transplant! I'll definitely keep using the cap and would recommend to others. It is pretty easy every other day while watching TV in the evening!

Rochelle A.

I have been using Kiierr hair growth cap for a few years now consistently. I started getting bald areas along the crown and my hair line. Not sure what was causing it. But after some research I learned that red light therapy was good for follicle stimulation. And in a few weeks I started to see some small growth. So I continued for months and it definitely started to fill in. My part and hair line are no longer see-through and thinned out. I still use the cap every other day- I feel it really helps keep my scalp / hair follicles healthy.

Mick D.

I started using my cap in April 2024. I haven’t taken any other supplements,, just use the laser cap. And as you can see in the pics it helps a lot. I wish I would have started YEARS ago.

Pauline C.

I purchased the Kiieer hair growth laser cap 4 years ago and it is still going strong and maintaining the growth it produced. I was losing a great amount of hair every time I shampooed I hope my before and after pictures convince you to try this product. It really worked for me. I now use it twice a week for maintenance. I recently went to my dermatologist and mentioned the cap and he gave it a thumbs up and said that good laser caps do work.

Martha T.

I've been using my Kiierr MD Laser caps for about 3 years. In 2020 I lost almost all my hair due to Talogen Effluvium. I tried Rogain, pills, and another popular companies laser cap. Nothing. I was stuck in a chronic phase of hair loss. Friends would ask if I was having chemo! Then in 2022 I started using the Kiierr Laser Cap along with the Kiierr supplements and shampoo/conditioner. . . my hair started growing back! Slowly but surely. I still am using my cap and my hair isstill growing. . . slowly but surely! Their customer service is also wonderful!

Faye S.

I received the Kiierr laser cap as a birthday gift in June 2021 when I was 84 years old, and have continued using it ever since. As you can see in my pictures, there was good growth after roughly 1. 5 years, and even more now, almost 4 years later. I have been really pleased with the regrowth, though I do still have very fine hair.

Steve J.

I have been using the Kiierr 272 Premium Laser Hat since Oct 2024. I have already seen tremendous hair growth. I feel the Kiierr hat definitely helps with better blood circulation contributing to hair growth. Worth giving it a try and backed by their guarantee.

Lillian J.

I've had a great experience with Kiierr! The package arrived beautifully and shipping was super fast. I started using the laser cap two years ago, 3–4 times a week for 30 minutes, to address thinning in both corners of my hairline. Over time, I've seen significant hair growth and feel so much more confident. Highly recommend!

John J.

I have received significant hair growth over the past 18 months using my Kiierr hair restoration cap.

Frank L.

I’m a 67 year old male in excellent health and I started using my Kiierr cap almost 4 years ago. After the first 6 months or so, I noticed that there was less hair caught by my shower drain strainer than in the past. This has continued to this day. Over time, my temples and the thinning hair on my crown have filled in somewhat. As a result, I don’t wear a cap nearly as often as I used to which is kind of liberating. The purchase of the Kiierr cap was a very worthwhile investment for me.

Elvira W.

I have been using the laser cap for over 2 years now and have noticed significant improvements in my hair growth. My hair is fuller and thicker, with increased growth at the hairline. I’ve gone through a major life transition in the past few years and the helmet has saved my hair! As a woman in her early 40’s who had long and luscious hair all her life, it was difficult to watch the change in my hair so I knew I had to do something. The Kiierr helmet was just the device I needed! If you’re thinking about it, do not hesitate as it is a great device which is easy to use, and will bring back your hair along with your confidence! I highly recommend it!

Karen C.

I had lost a considerable amount of hair in my late 30’s and early 40’s to the point I was so self conscious I kept my hair super short. I heard about red light therapy helmets from a hair specialist and started my research. I found Kiierr was more affordable and offered natural supplements and hair care products which was in my line of preference. After about six months I started noticing a big difference. I now have been growing my hair out and feel exceptionally more confident in how I look, thanks to Kiierr!

Karen C.

I had lost a considerable amount of hair in my late 30’s and early 40’s to the point I was so self conscious I kept my hair super short. I heard about red light therapy helmets from a hair specialist and started my research. I found Kiierr was more affordable and offered natural supplements and hair care products which was in my line of preference. After about six months I started noticing a big difference. I now have been growing my hair out and feel exceptionally more confident in how I look, thanks to Kiierr!

Vincent R.

Easy to use cap which I have been using for about 5 years now, every other day. My hair strands have become thicker and have less shedding. Would recommend, espcially since the scientifical backup. Kiierr has been quick in responding to my questions, as well as finding suitbable solutions / offers.

Brad S.

I’ve been using the laser cap for 2 years and I’m thrilled with the results. Not only has it stopped my hair loss, I have actually grown more, which has been a shock to me. This device has been a game changer for me. My hair looks and feels thicker. It’s easy to use and fits seamlessly into my routine. I was skeptical at first, but it’s definitely been worth the investment. Highly recommend to anyone struggling with hair loss!

Karen C.

I had lost a considerable amount of hair in my late 30’s and early 40’s to the point I was so self conscious I kept my hair super short. I heard about red light therapy helmets from a hair specialist and started my research. I found Kiierr was more affordable and offered natural supplements and hair care products which was in my line of preference. After about six months I started noticing a big difference. I now have been growing my hair out and feel exceptionally more confident in how I look, thanks to Kiierr!

Penny T.

I have been using the Kiierr Cap for 15 months and have seen a noticeable improvement in the fullness on the crown of my head. There are many new hairs consistently growing in and it has made a huge difference in my self esteem.

Mark R.

I have been using the Kiierr Cap for 15 months and have seen a noticeable improvement in the fullness on the crown of my head. There are many new hairs consistently growing in and it has made a huge difference in my self esteem.

Abby A.

It really does work!
With using the kiierr laser cap I have regrown a large amount of hair. I am so happy with my results and plan to continue use forever!

Karen O.

Noticeable menopause hair thinning brought me to Kiierr's hair cap, after several months of usage 3x a week, I started to notice my hair growing back as did my friends and even hair stylist!

Clayton B.

At 19 my hair began thinning. By 32 I'd lost most of the hair along the hairline. I first tried Rogaine that offered some improvement, but later stopped it and began using Kiierr. My hairline has dramatically improved. I feel the hat has been essential in improving the overall thickness and health of my hair and have been a regular user since 2021! I intend to use the laser hat for the rest of my life and expect it will continue to improve my hair and stop my hair loss!

Samantha G.

After giving birth I experienced a lot of postpartum hair shedding, which was really hard to deal with. It started to take a huge toll on my confidence. That's when I discovered the Kiierr laser cap. I was honestly amazed at how quickly I began to see results. After just a few months I noticed less shedding & even some regrowth in the areas that had thinned out the most. My hair feels fuller, and I can see a visible difference in its thickness. Getting my hair back has been such a huge confidence booster.

Mark R.

Service with customer support has been amazing. Shipping also was very fast! Over the last several months my hair has noticeably thickened

Karen H.

For Christmas 2020, knowing how much my hair loss bothered me, my husband Stan bought me the Kiierr cap. I was diligent about using it as instructed. Within months, my hairdresser noticed the growth of new hair. It grew back thick & healthy.

Danita T.

I have been very pleased with my Kierr Cap, my hair was thinning on top from hormone medication. I started using my cap and my has thickened and grown significantly over the last 2 years. Customer service is great, when I had an issue with the cap functioning they sent me the replacement part needed quickly. I have been pleased.

Austin W.

6 Months Using Kiierr
Works great, would recommend!

Connie K.

I have had my Kiierr Laser Cap for 3 years now & have been very happy with the improvements that have occurred in my hair density. After 8 months of using the cap, the part had narrowed. You can see how filled in it is along the part on top of my head. I am exceedingly pleased! It is worth way more than the price! I will never be without one!

Ronald P.

After spending over 10 years trying "other hair growth products", I heard about the success of using Laser Hats and chose Kiierr. As you can see, during the 3 year process of using the Kiierr Laser Hat, I could see remarkable results after only 6 months. Now, after approximately 3years, I’m enjoying the full benefits that surface with a full head of hair! My hair stylist complimented me along the way as she noticed the improvement in my hair growth. Furthermore, she stated out of all the clients she has with hair loss, I’m the only client she has with such a noticeable difference! I am thrilled I chose Kiierr!

Denise C.

I suffer from hormone related hair loss. It was devastating to see my hair become thinner & thinner. I began researching the laser technology and could not be happier selecting the Kiierr cap. I have been using it for 10 months. At first I was skeptical but I was astounded when I started seeing growth after 6 weeks! Every couple of months, we would take a new picture and the results kept getting better and better. My husband agrees that my hair is thicker than it's ever been. My hairdresser was amazed and plans to recommend it to other clients.

James R.

Ive been using the laser cap for 5 months and it has made a huge difference. The large spot that my scalp was showing is really filling in now. I feel like I look years younger. I was hesitant to purchase cause it seemed like it was too good to be true. But I took a chance on it and to my surprise it definitely did work! Awesome company and awesome product. Im now a believer in laser therapy.

Hess S.

I love my Kiierr cap. It gave me my life back! I also love Kiierr’s customer service.

J. H.

My hair feels thicker, healthier and I’m not seeing as much scalp near my part.

Jeffrey L.

I've been extremely impressed and pleased with my results from using the cap. My hair was thinning on the front and top of my head but has since noticeably filled in from consistently using the cap.