272 DIODES
312 DIODES
302 DIODES
HAIR & SKIN
SKINCARE ESSENTIAL
PATENTED TECH
5 MODELS
#1 DOCTOR RECOMMENDED
LASER THERAPY BRAND ·
Bestseller
CLINICIAN'S CHOICE
272 Premier Laser Cap
PureLaser™ Technology
4.5 · 2145 reviews
7 month money-back guarantee
PureLaser™ technology targets thinning at the root, helping you stop the shedding, see real regrowth, and feel like yourself again.
FDA cleared & effective for men and women
Clinically proven & doctor recommended
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Add To Cart —
Optional add-on
68% add this
Add growth gummies for FREE
Blocks DHT and reduces shedding, from within.
1st month free · then $34/mo
$49
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Why add it?
A 10:1 blend of clinically recognized, doctor recommended actives that works from the inside — feeding the same follicles your cap treats at the scalp.
Naturally blocks DHT to nourish weak follicles
Reduces shedding and promotes faster growth
Strengthens strands with collagen and biotin
Inside the formula
Biotin 5000 mcg
Supports keratin for stronger hair
Marine collagen 500 mg
Amino acids for hair structure and strength
KSM-66 ashwagandha 300 mg
Helps ease stress-related shedding
Pumpkin seed 300 mg
Supports scalp health and thicker-looking hair
Panax ginseng 200 mg
Supports circulation to the follicles
Plus red radix root, bhringraj, vitamin C, zinc and selenium
Results with consistent daily use
Cap alone
Great
Cap + gummies
Fuller
Description
The Kiierr 272 Premier uses medical grade lasers to gently stimulate blood flow in your scalp. This increased circulation brings more oxygen & nutrients directly to your hair follicles, recharging them and helping them grow stronger, thicker, and healthier hair!
What's Included
The Kiierr 272 Premier Laser Cap
A lightweight baseball-style cap for discreet wear
A rechargeable battery pack
Power cord and wall adapter
User guide with simple setup and care instructions
A 2-year manufacturer warranty
Instructions
Charge the battery fully.
Connect the battery pack to the cap.
Place the cap on clean, dry hair and press power.
Use for 30 minutes every other day.
The cap will automatically turn off after the treatment ends.
Specifications
Power Output: 1360 mw
Number of Laser Diodes: 272
Laser Wavelength: 650nm
Output Mode: Pulsing
Treatment Time: 30 Mins Every Other Day
Sizing: The Kiierr 272 Premier is designed to sit higher on the scalp rather than fit snugly to ensure optimal coverage across the most common areas for hair loss. Most head shapes and sizes fit the Kiierr 272 Premier (23.5" circumference)
If you are interested in our 272 Elite XL (fits 24.5) you can find that here.
Shipping & Returns
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. Read Full Return Policy
Warranty: Kiierr laser caps come with a 2-year warranty, which covers any defects or failures.
Shipping: New orders normally process within 2-3 business days & are shipped with 2-Day Shipping via USPS Priority or FedEx. Shipping within the US is free. We ship to almost all countries & international shipping is $55 USD (plus customs fees charged by FedEx)
7 Month growth guarantee
Regrow hair or it's free
If you don't see thicker, fuller hair within 7 months, we'll refund you in full. See policy for details.
AS SEEN IN
See the difference for yourself.
Verified customer before & after photos — unretouched, unfiltered.
"I'd tried everything. By week 12 I could see actual new growth along my hairline. My stylist noticed before I even mentioned it."
Sandra M.
Verified customer
Female pattern
"The crown of my head was almost
completely bare and I'd given up hope. The Kiierr cap gave me density I hadn't seen in 10 years."
James T.
Male pattern
"Post-partum shedding hit me hard. Six months with Kiierr and I have my confidence back — it genuinely changed how I feel every morning."
Priya K.
Postpartum
"I'm 58 and didn't think regrowth was even possible at my age. My dermatologist recommended Kiierr and I'm genuinely amazed by the results."
Robert D.
Age-related
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Real results, backed by research.
Kiierr's laser therapy isn't a wellness trend — it's one of the most clinically studied hair loss treatments available today.
FDA Cleared
Drug Free
Clinically Tested
Real data. Real growth.
Clinically proven results
LLLT cap
+29 hairs/cm²
Placebo
+3 hairs/cm²
Terminal hair count increase
randomised controlled trial · 48 weeks*
*2026. Multicenter prospective trial, adults with androgenetic alopecia using home-use LLLT device.
+39
%
Hair density
after 16 weeks*
Rigorous quality standards
Precision is built into everything we make. We engineer every device to meet strict external certifications and safety approvals because the science only works when the hardware does.
ISO Certified Manufacturer
PureLaser™ Tech (No LEDs)
FDA Cleared Safe & Effective
Frequently Asked Questions
Message us at sales@kiierr.com to connect with a dedicated support agent. Our small, knowledgeable team personally responds to every email (no bots or AI). We’re always here to help and make sure your questions are answered quickly & with care.
Laser Cap Questions
Will this product work for me?
Kiierr laser caps are designed to help both men and women experiencing hair thinning or loss caused by common conditions such as androgenetic alopecia (male or female pattern baldness), postpartum hair loss, menopause-related thinning, stress-induced shedding, or general hair weakening with age. The caps use low-level laser therapy (LLLT), a safe, non-invasive technology that stimulates hair follicles, increases blood flow, and supports stronger, thicker hair growth over time. It works best for those who still have active follicles, meaning some existing hair is present. While results vary from person to person, most users who stay consistent with their treatment see visible improvement in hair fullness and scalp health.
When can I expect results?
Everyone’s hair growth cycle is different, but most users notice early improvements within the first few months. During the initial phase, you may experience some light shedding as weak hairs make way for stronger new growth. Visible thickening and regrowth typically begin around the 3-6 month mark, with the most noticeable results appearing between 6-12 months of consistent use. Continued use helps maintain and enhance your results over time.
What model should I choose?
Kiierr offers several laser cap models so you can choose the one that fits your needs and goals.
The 148 Pro model is a great entry-level choice for those just starting their hair growth journey. It is used every other day for 30 mins and fits up to 23.5" in circumference.
The 272 Premier and 272 Elite XL models provide stronger coverage and are ideal for users with moderate thinning or those wanting faster, fuller results. It is used every other day for 30 mins & fits up to 23.5" in circumference for the standard and 24.5" for the XL.
The 272 DualWave combines 2 laser wavelengths for deeper follicle stimulation and added effectiveness. It is used 6 minutes daily & has a softer, more flexible deisgn.
For those looking for maximum coverage and power, the 302 UltraFlex and 312 DualWave are our most advanced options, featuring the highest diode count and full scalp stimulation. These models are used 6 minutes daily & have a softer, more flexible deisgn.
No matter which you choose, all models use medical grade lasers and deliver the same proven therapy. Higher diode counts simply increase scalp coverage & treatment intensity.
What payment options do you have?
We accept all major payment methods through Shopify, including credit and debit cards, PayPal, and Shop Pay.
You can also use your FSA or HSA account for reimbursement.
Do you have a warranty?
Yes, every Kiierr laser cap comes with a full two-year warranty. If you experience any issues during that time, our support team is happy to help with repairs or replacements. Simply email us, and we’ll make sure you’re taken care of quickly and easily.
What if I don't see results?
Consistency is key with low-level laser therapy. Make sure to follow the recommended treatment schedule and continue using your cap regularly for at least 7 months. Because hair growth happens gradually, it can help to take photos every month to track your progress. If you’ve used your cap consistently and haven’t noticed results after the full treatment period, reach out to our support team. You can read our full policy here.
Trusted by 125k+ Happy Customers
4.9 (2145 reviews)
Amanda R.
Female Pattern
I started noticing my part getting wider in photos, especially under bright lights. I had tried vitamins and expensive shampoos, but I wanted something that felt more targeted. I chose Kiierr because I liked that I could use it at home without adding another appointment to my schedule. After staying consistent for several months, I started noticing little hairs filling in around my part and my scalp was not as visible. That was the first time I felt like I was actually doing something that was making a difference.
272 Premier
Nicole S.
Diffuse Thinning
My hair has always been very fine, but over the last few years it started looking flat and sparse on top. I was tired of constantly changing my part to hide it. After several months with the cap, I have more little hairs coming in around the top and my normal part does not bother me nearly as much anymore.
Lauren H.
stress
Stress caused me to shed more hair than I ever had in my life. Once things settled down, my density did not seem to bounce back the way I hoped it would.
I started using Kiierr mostly because I wanted a routine that did not involve applying something to my scalp every day. I knew I would never stay consistent with that.
The cap was surprisingly easy to fit into my life. I usually use it while reading before bed. For the first couple months, I really did not notice much. Then I started seeing short hairs sticking up around the top of my head. A few months later, the difference in my part became much more obvious.
The biggest lesson for me was to stop checking every day. Hair growth is slow. Taking photos once a month made it much easier to see the progress.
272 DualWave
Jason P.
genetic
I started early because my dad and both grandfathers lost a lot of their hair. Once I noticed my temples creeping back, I did not want to wait until it became severe. I went with Kiierr because prevention seemed smarter than trying to fix major loss later. So far my hair feels thicker and my hairline has stayed pretty stable. I am happy I started when I did.
312 DualWave
Michael T.
crown thinning
My biggest problem was thinning at the crown. I honestly did not expect much because I had already tried several things over the years. I took pictures before I started with Kiierr and I am glad I did because the change was much easier to see in photos than in the mirror every day. My crown looks noticeably fuller now. Consistency was the biggest thing for me.
302 Ultra Flex
Andrew S.
Crown Thinning
I started using it because my hair was getting harder to style. Every haircut seemed to expose my thinning crown more. After using the cap consistently, I started noticing that I could style my hair without spending 10 minutes trying to position it perfectly over the thin area. That was a pretty clear sign of progress for me.
Christopher L.
male Pattern
I was skeptical. Very skeptical. My wife actually found Kiierr and kept sending me info about laser therapy. I kept saying I did not want another hair loss gimmick sitting in a drawer.
Eventually I started reading about how laser caps work and decided to give it a shot. My thinning was mostly through the crown and middle of my scalp.
The first thing I noticed was not dramatic growth. It was that my existing hair started looking better. It seemed stronger and had more body when I styled it. Later, when I compared my pictures, I could see that the thin area at my crown was not as obvious. I am glad my wife was persistent.
302 UltraFlex
Rachel M.
postpartum shedding
After having my 2nd baby, my hair shedding became intense. I knew postpartum shedding could happen, but seeing handfuls of hair come out was still upsetting. Once the major shedding slowed down, I wanted something I could add to my routine to support my hair as it came back. I chose the 312 DualWave because I wanted one of the stronger options and liked the idea of getting red light therapy at home. Using it became incredibly easy. I usually put it on while I answer emails or fold laundry. The biggest change for me has been around my temples. They used to look almost see through when I pulled my hair back. Now I have a lot of shorter hairs growing there and my ponytail is starting to feel thicker again. I know hair takes time, so I was not expecting something overnight. I am just really happy I stuck with it.
David K.
Receding Hairline
I bought it for my receding hairline. The front corners are not magically back to how they looked when I was 20, but the hair I still have looks thicker and healthier. That alone made it worth using for me.
Olivia B.
Temple Thinning
For me, this was about confidence. I had started avoiding certain hairstyles because my hair looked so sparse. The regrowth has been gradual, but those areas no longer look nearly as empty.
Daniel G.
My barber noticed before I did. I sat down for a haircut and he asked if I had started using something because he was seeing a lot of shorter growth around my sides. That was probably the moment I became convinced the cap was doing something.
Sarah V.
age related
My thinning started gradually in my 40s. At first I thought I was imagining it. Then I saw a picture taken from above and could clearly see my scalp. That picture bothered me enough to start researching. I came across Kiierr while looking into red light therapy and spent a lot of time comparing different options. I finally chose the 312 DualWave because if I was going to commit to using a cap consistently, I wanted to invest in one of the models I felt strongest about. I kept that original photo. Several months later, I took another photo in the exact same spot with the same lighting. That was when I could really appreciate the difference. The top of my hair looked darker because there was simply less scalp showing through. I still use it consistently because I see it as part of taking care of my hair now, just like skincare.
Heather N.
Widening Part
This cap is amazing!!! I had been using hair fibers almost every day to cover my part. After being consistent with the Kiierr cap for months, I slowly realized I was reaching for the fibers less and less.
302 Ultraflex
Ryan B.
Hairline Thinning
Easy to use, comfortable, and I can wear it while watching TV. My hairline looks denser than it did when I started. No complicated routine, which is exactly what I wanted.
Joseph N.
Genetic Thinning
Hair loss runs heavily in my family. I started noticing mine at 26 and decided I would rather be proactive. I chose the 312 DualWave because I wanted good coverage across the entire top of my scalp. My main goal was maintaining density, especially around my temples and crown. I have been using it consistently and my hair still looks strong. I have even noticed some areas that looked thin before seem denser now liek the temples/hairline. For me, starting early was the right decision.
312 Dualwave
Kevin J.
I waited way too long because I thought laser caps sounded strange. Now I use mine while I watch sports. My thinning area has definitely filled in more than I expected. I wish I had started when I first noticed my crown getting thin instead of waiting several years.
Steven H.
The top of my head was slowly starting to thin more and more. I knew I needed to do something before it got worse. I was really skeptical when I heard about laser therapy but I'm a believer now. It really works. My hair is so much thicker and healthier
272 PREMIER
Michelle D.
diffuse Thinning
I love my Kiierr cap! My concern was diffuse thinning all over the top of my scalp rather than 1 specific bald spot. After several months, my hair looks fuller overall. Even my ponytail feels a little more substantial. This is the best solution for hair thinning!
Jennifer A.
weight loss
I started losing density after a period of rapid weight loss. My hair eventually stopped shedding so heavily, but it felt like half of what I had before. The 272 DualWave gave me something simple I could stick with while waiting for my hair cycle to recover. Over time I started seeing new hairs throughout my part and around my hairline. I still have a ways to go, but my hair finally feels like it is moving in the right direction.
Ashley J.
Thinning
I have curly hair and was worried a laser cap would be annoying to use with my texture. It has actually been very simple. The area I cared most about was the front because my edges had become thinner over time. I am seeing new growth there and my curls around the front look much fuller.
Thomas F.
male pattern
At 34, I was not ready to just accept that my hair was disappearing. The 302 has been simple to use and I have seen the most improvement around the crown and the area just behind my hairline. I feel much better about my hair now than I did a year ago.
Samantha K.
I went through a really stressful year and my hair seemed to pay the price. I had shedding everywhere, not just 1 area. By the time I bought the Kiierr cap, the shedding had slowed down, but my density was still terrible. I wanted to give my scalp and follicles as much support as possible while my hair recovered. I liked that the 312 DualWave covered my entire scalp because my thinning was diffuse. The progress has not been overnight, but it has been steady. My part is narrower, I have new growth around my temples, and my hair does not look as flat when I wear it down.
Brittany W.
I bought this because my wedding was coming up and I hated how thin my hair looked around my temples. I started well in advance because I knew hair growth takes time. By the time we took our wedding photos, I felt so much better wearing my hair back. That confidence alone was huge for me.
Melissa C.
Menopause Thinning
Menopause did a number on my hair. I had always had thick hair, so watching it become finer was difficult. My stylist was actually the person who told me to look into laser caps. I researched several brands before choosing Kiierr. I wanted a cap with a lot of coverage and something I would realistically use. I have been very consistent with it and the difference has been gradual but real. My part looks tighter, I see less scalp around the top of my head, and my stylist even commented that she was seeing new growth. That comment meant a lot because I had not told her I was using anything new.
Mark D.
Age related
I am 51 and realistic about hair loss. I was not looking for a miracle. I wanted to see if I could improve the density of the hair that was still there. That is exactly what I feel like the Kiierr cap has done. My hair looks thicker, especially from the top and back. I also like that it does not interfere with my day.
Adam C.
I mainly wanted to maintain the hair I still had. Anything beyond that was a bonus. My hairline looks stronger and the thin spot behind it has improved. I am very satisfied.
Courtney L.
I used to obsess over overhead lighting. Restaurants, dressing rooms, office bathrooms, anywhere with bright lights made my part look so much wider. After months of using Kiierr, I caught myself standing under one of those lights recently and realized I was not thinking about my scalp at all. That sounds small, but it was a really big moment for me.
Matthew R.
Male Pattern
I researched laser caps for weeks before buying one. I compared the number of diodes, treatment process, company history, guarantees, and reviews. Kiierr kept coming back to the top of my list. My main issue was male pattern thinning across the entire top of my scalp. I still had plenty of hair, but under bright lighting you could clearly see where it was heading. I took baseline photos before starting and continued taking them monthly. The first few months were subtle. Around month 4, the difference became easier to see. The crown looked less transparent. After that, I started noticing improvement through the middle as well. What I like most is that using the cap requires almost no effort. I do not have to remember multiple steps every morning and night. I put it on, let it run, and move on with my day.
Jessica P.
My mom has very thin hair, and when I started seeing the same widening part in myself, I knew I wanted to address it early. I liked Kiierr because it was something I could do privately at home. I did not want regular office visits or a complicated routine. I started noticing baby hairs after a few months. Now the area along my part looks noticeably better in natural light, which used to be the lighting I hated most.
Eric M.
I was starting to get the classic thinning circle at the back of my head. It bothered me every time I saw a security camera screen or a picture taken from behind. The 302 has made that area look noticeably fuller. I still have some thinning, but the contrast between my hair and scalp is nowhere near as dramatic.
Emily T.
Fine Hair
I have fine blonde hair, so even a little thinning makes my scalp show. The cap has helped my hair look denser through the top, especially when I am outside in bright light. I feel much less self conscious about it now.
4.5 (2145 reviews)
312 dualwave