FDA-cleared laser technology clinically proven to stimulate hair growth and prevent hair loss.
FDA-cleared to regrow hair in 4-6 months.
Lightweight, hands-free, and easy to use.
Thousands of happy customers with real results.
$1299 $999
Laser Diode
Helmet
$25 FREE
Black Ball
Cap
$99 FREE
Portable Batter
& Charger
$49 FREE
Carrying
Case
$25 FREE
Scalp
Massager
$179 FREE
Red / Blue Light Comb
Trusted by World
Leading Dermatologists
Dermatologist
Recommended
Free 2 Day
US Shipping
Quick &
Easy Returns
FDA
Cleared
2 Year
Warranty
Trusted by
Thousands
The Kiierr Laser Cap combines cutting-edge technology with user-friendly design to deliver powerful hair regrowth results.
Achieving thicker, fuller hair with Kiierr is as simple as following three easy steps. Designed to fit seamlessly into your routine, the cap works efficiently in just minutes per session.
Shipping:
All orders are processed within 1-2 business days and shipped directly to your door. Enjoy free delivery on all US orders, ensuring you get started on your hair regrowth journey without delays.
Returns:
We stand behind our product with a 7-month money-back guarantee. If you’re not satisfied with your results, simply return the product for a full refund—no questions asked.
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!
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.
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.
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.
Just pick what works for you at checkout!
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.
Yes! Kiierr laser caps are completely safe and FDA-cleared for hair growth. Unlike harsh chemicals or invasive procedures, our caps use low-level laser therapy (LLLT), a clinically proven technology that gently stimulates your hair follicles without pain, irritation, or side effects. LLLT has been backed by decades of research and is trusted by doctors and hair restoration experts. You can use your cap confidently, knowing it’s a safe, non-invasive way to give your hair the boost it needs.
AS SEEN IN
Designed to Target the Root Causes of Hair Thinning and Restore Confidence
Hair loss affects millions of people for a variety of reasons, but Kiierr’s laser caps are specifically
designed to address the most common causes:
By targeting the root causes of hair thinning, Kiierr delivers a safe, effective solution for lasting regrowth in 3 simple steps
Step 1
Laser therapy stimulates blood flow to the scalp, delivering oxygen and nutrients directly to hair follicles, reawakening them from dormancy.
Step 2
The medical-grade lasers kickstart the growth cycle in inactive follicles, helping hair grow thicker, fuller, and healthier.
Step 3
Consistent use strengthens hair over time, ensuring long-term results without invasive treatments or harsh chemicals.
Amy Mckinley
Dermatology physician assistant
“I’m really impressed by the results...”
I was astounded when I started seeing growth after 6 weeks! You have nothing to lose with the hair growth guarantee....just do it!
Denise C | Verified Buyer
I have been using the Kiierr Laser cap for 6 months. It works great. I would recommend!
Austin W | Verified Buyer
Since using the Kiierr laser cap, I have definitely noticed a difference in my hair. After a few months of using it, I saw lots of new growth!
Lisa G | Verified Buyer
STEP 1
Position the Kiierr Laser Cap on your head, ensuring it covers areas where hair growth is needed. Designed for a snug, comfortable fit, it’s easy to use anywhere.
STEP 2
Press the power button to activate the medical-grade lasers. The precision-engineered diodes target your scalp to stimulate dormant follicles and boost regrowth.
STEP 3
Sit back and let the cap do the work. In just 30 minutes a day, a few times a week, you’ll experience effective, hands-free hair regrowth. The cap automatically shuts off when the session is complete.
7 month money back guarantee
Achieve noticeable results in weeks with consistent use of Kiierr’s Laser Cap.
During this phase, shedding noticeably reduces as the foundation for hair regrowth begins. Improved scalp health ensures nutrients and oxygen start reaching dormant follicles, preparing them for growth.
Recovery: 10%
Subtle regrowth begins, and you may notice your hair looking healthier and thicker overall. Hair shedding stabilises further, as follicles re-enter the growth phase, preparing for more visible improvements.
Recovery: 20%
Thinning areas begin to fill in with new hair, while existing strands strengthen and gain volume. This is when most users start to see tangible improvements, with healthier, stronger-looking hair emerging.
Recovery: 30%
Significant progress becomes evident, with fuller, thicker hair transforming your overall look. Continued use ensures consistent results and long-term hair density, keeping regrowth strong and visible.
Recovery: 90%
7 month money back guarantee
Kiierr combines cutting-edge laser technology with simplicity, offering professional-grade hair
regrowth treatment in the comfort of your home.
01 – Scientifically Optimised Wavelengths
Laser energy at 650nm penetrates the scalp, reactivating dormant follicles for thicker, healthier hair regrowth.
02 – Hands-Free Design
Lightweight, portable, and completely hands-free—designed for effortless daily use.
03 – FDA-Cleared and Proven
Our laser caps are FDA-cleared and backed by clinical research to ensure safety and efficacy.
04 – Full Scalp Coverage
Engineered with medical-grade lasers to provide consistent, even coverage across the entire scalp.
05 – Auto-Programmed Sessions
Each session is pre-programmed for optimal results, delivering a powerful 30-minute treatment without guesswork.
06 – Safe, Non-Invasive Treatment
A natural alternative to invasive surgeries or chemical solutions, with no side effects and clinically proven results.
7 month money back guarantee
Dive into groundbreaking research and reliable studies that highlight the effectiveness of red light technology in combating hair loss and encouraging healthy regrowth. The results speak for themselves, demonstrating the proven success of laser hair growth.
Clinical Study 1
The Impact of Low-Level Light Therapy (LLLT) on Hair Regrowth
Clinical Study 2
Home-Use LLLT Devices Show Significant Hair Growth
Clinical Study 3
Evidence of Effective Hair Density Improvements with LLLT
Clinical Study 4
24-Week Study on LLLT’s Efficacy for Hair Loss
Dive into groundbreaking research and reliable studies that highlight the effectiveness of red light technology in combating hair loss and encouraging healthy regrowth. The results speak for themselves, demonstrating the proven success of laser hair growth.
Kiierr’s Ultra Flex Cap delivers industry-leading power output, ensuring maximum energy reaches your scalp for faster and more effective hair regrowth.
Kiierr’s optimised diode placement offers full scalp coverage, targeting all key areas of thinning hair while maintaining a lightweight, portable design.
Kiierr exclusively uses laser-only technology, calibrated to 650nm for scientifically proven follicle stimulation, unlike devices relying on LEDs or inconsistent wavelengths.
7 month money back guarantee
Join thousands of satisfied users experiencing real results with Kiierr’s advanced laser technology.
of users noticed reduced hair shedding within 3 weeks.
“I started noticing a big difference after just a few weeks—my
hair shedding reduced dramatically!”
reported visible hair growth in just 6 months
“Six months in, I could see new growth where I thought my hair
was gone for good. It’s truly incredible!”
felt their hair looked thicker and healthier.
“My hair feels so much thicker and looks healthier than it has in
years. I’m beyond thrilled with the results!”
recommended Kiierr to friends and family.
“I’ve told all my friends about Kiierr—it’s easy to use, and the
results speak for themselves.”
*Based on customer feedback and reviews.
Individual results may vary.
7 month money back guarantee
LASER CAPS
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Kiierr Laser Cap Hair Growth System 
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