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.
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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
Hear it from men who were exactly where you are.
Real customers who dealt with hair loss just like you — in their own words.
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
SALE ENDS SOON
$600
OFF
+ 4 free gifts
$246 value
In stock · ships today
Free US shipping
Protect your cap
Most owners choose extended protection. Add anytime before checkout.
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 —
$1,799
Ships Today
Order by 3pm ET
Free Shipping
For US Orders
7-Month
Growth Guarantee
4 free gifts with your cap
$246
FREE
Portable Battery
Rechargeable — take your session anywhere
Carrying Case
Keeps your cap safe at home or while traveling
Multi Peptide Serum
Pairs with your cap for faster results
Hair Growth Shampoo
Clears buildup so light reaches the scalp
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. It's designed for men and women with thinning or diffuse hair loss — the kind that starts at the crown, part line or temples. The lasers wake up follicles that are weakening, so it works best where hair is thinning rather than areas that have been completely 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?
Is it safe? Any side effects?
Why lasers instead of LEDs?
What's the time commitment?
How does it compare to a clinic or a transplant?
What if it doesn't work for me?
Is it HSA / FSA eligible?