272 DIODES
312 DIODES
302 DIODES
HAIR & SKIN
SKINCARE ESSENTIAL
PATENTED TECH
5 MODELS
#1 DOCTOR RECOMMENDED
WOMEN'S HAIR GROWTH BRAND ·
LOVED BY WOMEN
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 and women
Clinically proven & doctor recommended
SAVE $400
Payment options
Explore each way to pay. Choose any method at checkout.
Monthly
HSA / FSA
In full
Pay monthly
Shop Pay · Affirm
3 mo
6 mo
Estimate
$399.66
/mo
$199.83
$99.92
Estimate for 3 payments on a $1,199 order. Subject to an eligibility check. Terms shown at checkout.
Estimate for 6 payments on a $1,199 order. Subject to an eligibility check. Terms shown at checkout.
Estimate for 12 payments on a $1,199 order. Subject to an eligibility check. Terms shown at checkout.
HSA / FSA card
Health card at checkout
via TrueMed
Select your HSA or FSA card as the payment method at checkout the same as any debit card. TrueMed confirms your items are eligible automatically.
Pay in full
Card, PayPal & more
$1,199
Add To Cart —
Optional add-on
71% add this
Add Multi-Peptide Hair Growth Serum for FREE
Clinically studied peptides for thicker, healthier hair.
1st month free · then $34/mo
$49
Add to my order
Cancel anytime
Why add it?
A clinically advanced peptide serum that works directly at the scalp—helping support healthier follicles, reduce shedding, and create the ideal environment for fuller-looking hair.
Helps reduce shedding & support healthier hair growth
Clinically studied peptides nourish & strengthen follicles
Lightweight, non-greasy formula for daily scalp use
Inside the formula
Redensyl™
Helps reactivate hair follicles.
Capixyl™
Supports stronger hair while helping reduce excess shedding.
Procapil®
Helps strengthen hair at the root for improved retention.
Anagain™
Energizes the scalp and supports healthier-hair.
Caffeine
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 on the market before Kiierr and honestly expected nothing different. By month 3 my part had visibly stopped widening and my scalp felt healthier than it had in years.
Melissa T.
Verified customer
THINNING
After having my second baby my hair was falling out in handfuls and nothing was helping. After around 3 or 4 months the shedding slowed significantly and my roots felt stronger.
Sarah K.
Postpartum
Stress had taken a serious toll on my hair over the past 2 years and I could see my scalp through my crown. With Kiierr the thinning had noticeably slowed and new growth was coming in thicker.
Jane D.
STRESS
I started noticing thinning along my part in my late 30s and assumed it was just aging. After using Kiierr products consistently my part looked visibly narrower and my hair felt denser overall.
Rachel M.
Age-related
Compare us to other
Treatments
LLLT Caps
The Ultimate Hair Growth Treatment
FDA-cleared treatment
No side effects or systemic drugs
At-home convenience (no clinic visits)
One-time cost (no ongoing expenses)
Kiierr
Minoxidil
Finasteride
PRP Therapy
Hair Transplant
Medical Grade Lasers (No LEDs)
100% Money Back Guarantee
Best Value per Laser Diode Count
Overall Customer Satisfaction
Helmet Style
Ball Cap Style
Helmet Style B
Headband Style
swipe to see all treatments →
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.
Loved by 125,000+ Women
4.5 average from 2,145 verified reviews
DM
Diane M.
✓ Verified
I started using Kiierr because I was noticing thinning around my temples and hairline, especially when my hair was wet or pulled back. After using this consistently, my hair feels healthier, softer, and much less fragile. The thinner areas around my hairline look less noticeable, and I am seeing less shedding in the shower.
MF
Monica F.
My crown was the area that bothered me most. I could see my scalp at the top/back of my head, especially in photos taken from above. After consistent use, the crown area looks less sparse and my hair feels stronger overall. I also noticed less shedding when I wash my hair, which was a huge relief. My hair feels strong, soft, and easier to style.
NR
Nancy R.
After a stressful period, I started shedding a lot more than normal. I would see hair in the shower, on my brush, and all over my clothes. My hairline and sides started looking much thinner, so I decided to try Kiierr. It made my hair feel healthier pretty quickly, and over time I noticed much less shedding. The thinner areas around the front look more filled in, and my hair feels stronger overall. I feel much more confident wearing my hair back now.
LB
Lauren B.
My biggest concern was my widening part. Every time I looked in bright bathroom lighting, my scalp looked more visible than I wanted. I started using Kiierr because I wanted something that would support my scalp and help my hair look fuller without taking meds or things with side effects. After a few months, my hair feels stronger at the roots and my part does not look as wide.
AY
Abby Y.
My hair was not thinning in just one spot, but it looked limp, flat, and less full overall. The back of my hair especially looked stringy after washing, even when I used volume products. Since starting kiierr, my hair feels so much thicker. It looks healthier from the back and has more natural body.
MJ
Melissa J.
My crown and center part were becoming more noticeable in certain lighting, and I hated how flat my hair looked after washing. I have been the cap consistently for several months, and my part looks less wide than it used to. The crown area also looks healthier and not as sparse.
VR
Vanessa R.
The top of my hair had become so thin that I could see my scalp through the center, especially right after washing. I was nervous to try another prodcut because I did not want anything to make it worse. After using Kiierr's cap, my hair started feeling thicker and healthier, and the top looks more filled in than before. I still know hair improvement takes patience, but I am really happy with how much better my hair looks and feels.
MZ
Marie Z.
My thinning was most noticeable on the top of my scalp where my hair naturally parts. Because my hair is lighter/red-toned, my scalp showed through more than I liked. After using Kiierr for 6 months, the part area looks fuller than it did before. I am very happy with the progress.
LH
Linda H.
The side of my head near my temple had become really thin, and it made styling my hair difficult because certain angles showed too much scalp. I added the Kiierr cap and shampoo to my wash routine and gave it time to work. My hair feels stronger, smoother, and healthier now, and the thin area along the side looks softer and less noticeable. It also gives my hair more volume without making it frizzy.
May F.
My hair has gradually gotten thinner with age, especially around the front and sides. Kiierr has made a noticeable difference in the way my hair feels. It feels fuller, smoother, and stronger. The front areas look thicker, and my hair has more body when I blow dry it. It is now one of the easiest parts of my hair routine to stay consistent with.
JR
Jenna R.
I had thinning near my temples and along the sides, which always showed when I tucked my hair behind my ears. After using it for 4 months, the thinner side areas look less obvious and my hair feels stronger when I brush and style it.
SW
Stella W.
I wanted to get ahead of my thinning before it became worse. My hair was still long, but it was starting to look thinner at the top and flatter overall. I started using the Kiierr cap because it felt like an easy first step. After a few months, my hair feels stronger, fuller, and much healthier.