272 DIODES
312 DIODES
302 DIODES
HAIR & SKIN
SKINCARE ESSENTIAL
PATENTED TECH
#1 Korean Collagen Mask
5 MODELS
Bestseller
Clinician's choice
FDA cleared
Reverse thinning at the follicle. No pills. No side effects.
The 272 Premier Laser Cap delivers FDA-cleared, medical-grade laser light that reactivates dormant follicles — so you stop the shedding, regrow what you've lost, and keep it. 30 minutes, every other day, under a cap.
The 272 Premier Laser Cap delivers FDA-cleared, medical-grade laser light that reactivates dormant follicles. 30 minutes, every other day, under a cap.
Shop the 272 Premier →
★★★★★ 4.5 · 2,145 reviews
|
Featured on TODAY
Gold Choice 2026
Light Therapy Awards
Editors' Choice 2026
Hair Health Digest
PureLaser™ Certified
100% laser diodes, no LEDs
Clinician’s Choice
For hair loss
Gold Choice
2026
Editors' Choice
Award
PureLaser™
No LEDs
Thinning hair isn't dead hair. Follicles go dormant — laser light wakes them up.
Male pattern hair loss is a slow shrinking of the follicle under DHT. Minoxidil widens blood vessels and finasteride blocks the hormone, but neither re-energizes the follicle itself. Low-level laser therapy does — and it's the only one of the three with no systemic side effects.
01
Medical-grade light reaches the follicle
272 laser diodes — not LEDs — deliver 650nm red light through the scalp at a clinically studied dose, every session.
02
Follicle cells recharge
Light is absorbed by mitochondria inside the follicle, boosting ATP production and blood flow — the process clinicians call photobiomodulation.
03
Dormant follicles restart growth
Follicles shift from the resting phase back into the growth phase, producing thicker, darker, denser hair over the following months.
Lasers, not LEDs. That's PureLaser™.
LEDs scatter light before it reaches the follicle. Laser diodes deliver a coherent beam at a precise wavelength, so every follicle gets a consistent, therapeutic dose. Many caps mix in LEDs to pad the diode count — the 272 Premier is 100% laser.
272
laser diodes
0
LEDs
650
nm wavelength
Thousands of men wear it every other day. Here's what that actually looks like.
No clinic visits. No routine to remember beyond a timer. Put it on, press start, and get on with your day.
Portable and hands-free. At your desk, on the couch, or during the game.
Nobody can tell it's a treatment — it's just a cap.
Put the cap on
It's comfortable and easy to use.
START
30:00
Press start
One button.
Auto shut-off at 30 minutes.
Repeat every other day
About 15 sessions a month. Most men pair it with a podcast and forget it's on.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Used by 125,000+ men
1,240 sessions running right now
2.1M+
30-minute sessions completed under Kiierr caps — and counting.
93%
saw visible regrowth
4.5
★
2,145 verified reviews
40+
countries shipped to
What to expect, month by month
Hair grows in cycles, so results arrive in stages. Our guarantee runs the full 7 months because that's how long the cycle takes to prove itself.
Weeks 1–8
Shedding slows
Follicles stabilize. Noticeably less hair in the drain and on the pillow.
Months 2–3
Follicles reactivate
Fine, light new hairs appear at the hairline and crown.
Months 3–5
Visible regrowth
New hairs thicken and darken.
Density improves in photos.
Months 5–7
Full results
CLINICIAN'S CHOICE
FDA CLEARED
272 Premier Laser Cap
PureLaser™ Technology
4.5 2,145 verified reviews | Featured on TODAY
PureLaser™ technology targets thinning at the root with 272 medical-grade lasers, helping you stop the shedding, see real regrowth, and feel like yourself again. 30 minutes, every other day, under any hat.
FDA cleared & effective for men and women
Clinically proven — +39% hair density in 16 weeks
Doctor recommended — 1,285 clinicians · drug-free, painless
This is the Black Friday price, unlocked early — and it's yours now, before stock can run out.
BLACK FRIDAY EXCLUSIVE
FREE
$199
Save $199
Portable
Battery
$99 Value
Carrying
Case
$49 Value
Hair Growth
Serum
2-Year Warranty
Included
Covers manufacturing defects on the cap, lasers and battery.
5-Year Extended Warranty
MOST POPULAR
+$99
Everything in the 2-year, extended to 5 — plus accidental damage.
Add To Cart —
$1,998
Ships Today
Order by 3pm ET
Free Shipping
For US Orders
7-Month
Growth Guarantee
I'd tried everything — the foams, the pills, a dermatologist. Five months with this cap and the bald spot I hid under hats for a decade is filling in.
★★★★★
· 272 Premier
Daniel R.
Real customers, real regrowth
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.
Wear it for 7 months. See regrowth, or get every dollar back.
Seven months isn't arbitrary — it's how long the hair cycle takes to prove results. Most brands give you 30 or 60 days. We cover the entire window.
Start your 7-month trial →
7 mo
Money-back guarantee, no questions asked
$0
Shipping. Ships within 1–2 business days
2 yr
Device warranty on every diode
$99
/mo
2018
8 years since Kiierr was founded
125k+
men treated at home
from 2,145 verified reviews
FREE PHONE CONSULTATION
Still not sure it'll work for you? Ask a real person.
If this page didn't answer your question, a Kiierr hair growth specialist will — by phone, free. Tell them about your thinning (or send a photo) and they'll give you an honest answer: whether the 272 is right for you, and if it isn't, they'll say so.
Honest fit check — a straight answer on whether it will work for your hair
Your questions, answered — results, timeline, safety, pairing with what you already use
Zero pressure — no scripts, no upsell, no card needed
Talk to a hair growth specialist
Free 15-minute phone call · pick a time that suits you
Find out if the 272 is right for your type of thinning
Get a realistic timeline for what you can expect
Ask anything about the guarantee, warranty or HSA/FSA
Schedule my free call
Choose your time on the next step · We call you · Reschedule anytime
Recommended by the clinicians who treat hair loss every day.
"Low-level laser therapy is one of the few drug-free options with FDA clearance for pattern hair loss. The 272 Premier gives my patients a clinical-grade dose at home."
Dr Blane Schilling
Board-certified dermatologist
"I recommend it alongside — or instead of — minoxidil for men who don't want a lifelong topical routine. Compliance is high because it's thirty minutes under a cap."
Dr Debra Shelby
Is it right for you? Pick what you see in the mirror.
Laser therapy works on follicles that are shrinking, not gone. Here's an honest read for each stage.
Early Thinning
Receding Hairline
Thinning Crown
Advanced Loss
1 in 4 Kiierr customers started exactly here
Caught early, this is where laser therapy works best.
Your follicles are shrinking, not gone — they still grow hair, just thinner and shorter each cycle.
650nm laser light is absorbed by the follicle’s cells, boosting their energy and blood supply so they stop shrinking and start rebuilding.
Men at this stage usually see shedding stop first, then hair come back thicker — because there is the most to save.
What to expect: Shedding slows within weeks. Visible thickening by month 3–4. Full results by month 7.
7-month money-back guarantee, every stage
The most common starting point — 4 in 10 customers
Your temples are still alive — they just need energy.
A receding hairline is DHT slowly shrinking the follicles at your temples. Most are weakened, not dead.
Laser light reaches those follicles directly through the scalp and re-energizes them — no pills, no hormones.
The hairline usually thickens first, then fills forward as miniaturized hairs grow back to full size.
What to expect: New growth at the temples by month 3. Strongest results by month 6–7.
1 in 3 Kiierr customers started here
The crown is where laser therapy is best proven.
Crown thinning is the most-studied pattern in laser hair research — and the one that responds most reliably.
272 diodes cover the entire crown at once, so every follicle gets a full, even dose each session.
As dormant follicles re-enter the growth phase, the thin spot fills in from the edges toward the center.
What to expect: Crown coverage improves from month 4. Strongest results by month 7.
1 in 8 Kiierr customers started here
It still works for you — here’s the honest version.
Where the scalp is smooth and shiny, follicles have closed, and no treatment reopens them.
Everywhere hair still grows — the borders, the sides, the thinning zones — laser light thickens and strengthens it and slows further loss.
Many men at this stage use it to protect what remains, or alongside a transplant to help new grafts thrive.
What to expect: Thicker, stronger existing hair and regrowth at the edges from month 4. Noticeably slower progression.
Every question, answered.
Will it work for me?
Yes — if your hair is thinning, not fully bald. The 272 Premier is designed for men and women with thinning or diffuse hair loss — a widening part, a thinning crown, receding temples, or hair that just feels less dense than it used to. The lasers wake up follicles that are weakening, so it works best where hair is thinning rather than areas that have been smooth and bald for years. Not sure which you are? Book a free consultation and a specialist will tell you honestly.
How soon will I see results?
Most people notice less shedding first, then new growth. Hair grows slowly, so the timeline looks like this: less hair in the shower drain and a healthier-feeling scalp in the first 6–8 weeks, visible thickening around months 3–4, and the fullest results between months 6 and 12. Take a photo of your part or crown before your first session — it’s the easiest way to see progress a mirror hides. Consistency is what drives results, which is exactly why our guarantee runs a full 7 months.
Is it safe? Any side effects?
Yes — it’s FDA-cleared and completely non-invasive. The 272 Premier uses low-level laser therapy at 650nm, a wavelength that stimulates follicles without heat, UV or radiation, and one that’s been used in clinics for decades. There’s nothing to swallow or rub in, so none of the side effects people worry about with finasteride or minoxidil. Some users feel a mild warmth on the scalp during a session, and a small number notice slightly more shedding in the first few weeks as weaker hairs make way for new growth — both are normal and temporary. Pregnant or breastfeeding? Check with your doctor before starting any hair-loss treatment.
Why lasers instead of LEDs?
Because lasers reach the follicle — LEDs mostly don’t. Laser diodes emit focused, coherent light that penetrates the scalp to the depth where follicles actually live. LED light scatters and loses most of its energy at the surface. Many “laser” caps pad their diode count with cheaper LEDs; the 272 Premier uses 272 true medical-grade laser diodes and zero LEDs, so every diode you’re paying for is treating your scalp. The research behind low-level laser therapy for hair loss was done with lasers — that’s the technology we built the cap around.
What's the time commitment?
30 minutes, every other day. Put it on, press the button, and it shuts off automatically when the session ends. It runs off a rechargeable battery pack, so you’re not tethered to an outlet, and it looks like an ordinary baseball cap — wear it while you cook, answer email or watch a show. Because it’s every other day rather than daily, it’s much easier to stick with, and sticking with it is what gets results.
How does it compare to a clinic or a transplant?
Same technology as the clinic, no appointments, a fraction of the cost. Clinics use the same low-level laser therapy — but charge per session and expect you to show up two or three times a week for months. The 272 Premier is a one-time purchase you use at home for years. A transplant is surgery: it moves hair from one area to another, typically costs $4,000–$15,000, and does nothing to stop the hair around the graft from thinning. Laser therapy works on the hair you still have — which is why many transplant patients use a cap to protect their results. If you’re thinning but not bald, the cap is the place to start.
What if it doesn't work for me?
You get your money back. Every 272 Premier comes with a 7-month growth guarantee: use the cap as directed for 7 months, and if you’re not seeing results, send it back for a refund. We ask for the full 7 months because hair cycles are slow and that’s how long it takes to judge fairly. There are a few simple conditions (like before-and-after photos) — see the full terms here. The cap itself is also covered by a 2-year warranty.
Is it HSA / FSA eligible?
Yes — and we make it easy. We partner with TrueMed so you can use your HSA or FSA dollars on the 272 Premier. Just choose TrueMed at checkout: you’ll answer a few quick health questions, and if you qualify, TrueMed issues the Letter of Medical Necessity your plan needs and you pay with your HSA/FSA card. No chasing down your doctor, no paperwork on your end. Since you’re using pre-tax money, most people effectively save 30% or more compared to paying out of pocket.
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.
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