Regrow Your Hair Safely,
Effectively, and Naturally!

FDA-cleared laser technology clinically proven to stimulate
hair growth and prevent hair loss.

FDA-cleared laser technology clinically proven to stimulate hair growth and prevent hair loss.

Rated 4.9 / 5.0 | Over 100,000+ Customers

use code SPRING for $125 off

Kiierr Laser Cap Hair Growth System

Clinically Proven

FDA-cleared to regrow hair in 4-6 months.

Effortless Use

Lightweight, hands-free, and easy to use.

Trusted by Thousands

Thousands of happy customers with real results.

Plus Enjoy FREE Gifts + Savings

$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.

  • FDA-Cleared Technology: Proven safe and effective for hair regrowth.
  • Advanced Lasers: Medical-grade lasers ensure even and consistent scalp coverage.
  • Built for Convenience: Lightweight, portable, and easy to integrate into your daily routine.

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.

  1. Wear the Cap: Place it securely on your head, ensuring it covers areas with thinning hair.
  2. Activate the Lasers: Turn it on and let the cap’s laser technology work for 30 minutes.
  3. Stay Consistent: Use the cap regularly, and start seeing noticeable results in as little as 4-6 months.

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.

Regrow Your Hair Safely,
Effectively, and Naturally!

FDA-cleared laser technology clinically proven to stimulate
hair growth and prevent hair loss.

FDA-cleared laser technology clinically proven to stimulate hair growth and prevent hair loss.

Rated 4.9 / 5.0 | Over 100,000+ Customers

use code SPRING for $125 off

Kiierr Laser Cap Hair Growth System

Clinically Proven

FDA-cleared to regrow hair in 4-6 months.

Effortless Use

Lightweight, hands-free, and easy to use.

Trusted by Thousands

Thousands of happy customers with real results.

Plus Enjoy FREE Gifts + Savings

$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

Order for FREE US delivery by: Apr 26

Choose Cap

148 Pro, 272 Premiere, 302 MD Ultra
Choose Bundle

Laser Cap Only, Complete System

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.

  • FDA-Cleared Technology: Proven safe and effective for hair regrowth.
  • Advanced Lasers: Medical-grade lasers ensure even and consistent scalp coverage.
  • Built for Convenience: Lightweight, portable, and easy to integrate into your daily routine.

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.

  1. Wear the Cap: Place it securely on your head, ensuring it covers areas with thinning hair.
  2. Activate the Lasers: Turn it on and let the cap’s laser technology work for 30 minutes.
  3. Stay Consistent: Use the cap regularly, and start seeing noticeable results in as little as 4-6 months.

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.

Kiierr Creates Thousands of Success Stories


Common Questions About Kiierr

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.

  • Affirm allows you to split your purchase into easy monthly payments with interest rates as low as 0% APR.
  • Afterpay allows you to split your purchase into four equal installments, due every two weeks, no interest or fees. PayPal Pay Later, you can choose to pay in full within 6 months with no interest, or make minimum monthly payments with interest.

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

How Kiierr Tackles Common Hair Thinning Issues

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:

Hormonal Imbalances
DHT buildup weakens follicles.
Genetic Factors
Inherited pattern baldness.
Stress Impact
Poor sleep and diet disrupt growth.
Medical Conditions
Alopecia, postpartum, thyroid issues.

By targeting the root causes of hair thinning, Kiierr delivers a safe, effective solution for lasting regrowth in 3 simple steps

Step 1

Restore Blood Flow

Laser therapy stimulates blood flow to the scalp, delivering oxygen and nutrients directly to hair follicles, reawakening them from dormancy.

Step 2

Reactivate Dormant Follicles

The medical-grade lasers kickstart the growth cycle in inactive follicles, helping hair grow thicker, fuller, and healthier.

Step 3

Support Long-Term Growth

Consistent use strengthens hair over time, ensuring long-term results without invasive treatments or harsh chemicals.

Trusted by Experts, Backed by Science

Amy Mckinley

Dermatology physician assistant

“I’m really impressed by the results...”

Trusted by Thousands for Real Growth

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

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

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

Scientifically Backed Hair Regrowth in 3 Steps

STEP 1

Place the Laser Cap

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

Power On

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

Relax and Regrow

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.

Add To Cart

7 month money back guarantee

Your Progress Timeline: What to Expect

Achieve noticeable results in weeks with consistent use of Kiierr’s Laser Cap.

  • Weeks 1 - 3

    Stabilisation Phase

    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%

  • Weeks 3 - 5

    Early Growth Phase

    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%

  • Weeks 5 - 7

    Visible Growth Phase

    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%

  • Weeks 8+

    Full Growth Phase

    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%

Add To Cart

7 month money back guarantee

Experience the Power of Red Light Therapy at Home

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.

Add To Cart

7 month money back guarantee

Scientific Proof You Can Trust

Backed by extensive research, Kiierr’s advanced laser technology is clinically
proven to stimulate hair growth and combat hair loss effectively.

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

  • Research demonstrated a 43% increase in hair growth in 100% of participants within just 9 weeks.
  •  Findings confirmed that LLLT stimulates dormant hair follicles and prolongs the growth phase for thicker, fuller hair.

Clinical Study 2

Home-Use LLLT Devices Show Significant Hair Growth

  • In a meta-analysis of FDA-approved devices, participants using LLLT experienced a noticeable increase in hair density compared to placebo groups.
  • This study supports LLLT as a safe, at-home solution for androgenetic alopecia.

Clinical Study 3

Evidence of Effective Hair Density Improvements with LLLT

  • Over 90% of study participants reported reduced hair loss and improved hair coverage in just 12 weeks of LLLT treatment.
  • Results showed consistent hair follicle stimulation without adverse effects.

Clinical Study 4

24-Week Study on LLLT’s Efficacy for Hair Loss

  • A randomized, double-blind trial revealed significant increases in hair thickness and density among LLLT users.
  • Findings concluded that LLLT is a highly effective treatment for androgenetic alopecia when used consistently.

Clinical Study 1

The Impact of Low-Level Light Therapy (LLLT) on Hair Regrowth

  • Research demonstrated a 43% increase in hair growth in 100% of participants within just 9 weeks.
  •  Findings confirmed that LLLT stimulates dormant hair follicles and prolongs the growth phase for thicker, fuller hair.

Clinical Study 2

Home-Use LLLT Devices Show Significant Hair Growth

  • In a meta-analysis of FDA-approved devices, participants using LLLT experienced a noticeable increase in hair density compared to placebo groups.
  • This study supports LLLT as a safe, at-home solution for androgenetic alopecia.

Clinical Study 3

Evidence of Effective Hair Density Improvements with LLLT

  • Over 90% of study participants reported reduced hair loss and improved hair coverage in just 12 weeks of LLLT treatment.
  • Results showed consistent hair follicle stimulation without adverse effects.

Clinical Study 4

24-Week Study on LLLT’s Efficacy for Hair Loss

  • A randomized, double-blind trial revealed significant increases in hair thickness and density among LLLT users.
  • Findings concluded that LLLT is a highly effective treatment for androgenetic alopecia when used consistently.

What Sets Kiierr Apart?

See how Kiierr outperforms the competition across power, coverage, and laser technology.

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.

Power

Kiierr’s Ultra Flex Cap delivers industry-leading power output, ensuring maximum energy reaches your scalp for faster and more effective hair regrowth.

Coverage

Kiierr’s optimised diode placement offers full scalp coverage, targeting all key areas of thinning hair while maintaining a lightweight, portable design.

Technology

Kiierr exclusively uses laser-only technology, calibrated to 650nm for scientifically proven follicle stimulation, unlike devices relying on LEDs or inconsistent wavelengths.

Add To Cart

7 month money back guarantee

Numbers That Speak for Themselves

Join thousands of satisfied users experiencing real results with Kiierr’s advanced laser technology.

93%

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!”

89%

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!”

95%

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!”

91%

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.

Add To Cart

7 month money back guarantee

Trusted by Thousands, Proven by Results

 

Kiierr Laser Cap Hair Growth System
$799.00 – $1,859.00 ADD TO CART