Landing Page

Kiierr has been featured in

Why Kiierr?

FDA Clearance

Kiierr is FDA cleared, giving you peace of mind that you’re using a safe and effective solution.

Superior Technology

Equipped with PureLaser ^TM Technology, our caps deliver focused light that penetrates hair follicles better than LED alternatives.

6 or 30-Minute Daily Treatments

For quick effective treatments, choose the model designed to fit your busy lifestyle

7-Month growth guarantee:

We stand behind our products, ensuring your investment is protected

Why Kiierr?

FDA Clearance

Kiierr is FDA cleared, giving you peace of mind that you’re using a safe and effective solution.

Superior Technology

Equipped with PureLaser^TM Technology, our caps deliver focused light that penetrates hair follicles better than LED alternatives.

6 or 30-Minute Daily Treatments

For quick effective treatments, choose the model designed to fit your busy lifestyle

7-Month growth guarantee:

We stand behind our products, ensuring your investment is
protected.

4.9100.000+ Happy Customers

Exclusive OFFER Ending in 48 Hrs!

LIMITED TIME: Get a FREE Laser Comb With Your Purchase

4.9100.000+ Happy Customers

Exclusive OFFER Ending in 48 Hrs!

Say goodbye to hair loss and hello to fuller, healthier hair. Order in the next 7 1/2 hours and receive our 4-in-1 advanced hair growth comb

LIMITED TIME: Get a FREE Laser Comb With Your Purchase

Say goodbye to hair loss and hello to fuller, healthier hair. Order in the next 7 1/2 hours and receive our 4-in-1 advanced hair growth comb

OPTIONS:

Pro Cap148 Diodes

Premier Cap272 Diodes

MD Ultra Flex Cap302 Diodes

*What is a diode? Click hereClick here to find the right cap for you.

7 MONTH MONEY BACK GUARANTEE

Order in 23h 59m to get it by Tue, Apr 22 More Info

Details

Kiierr laser caps, powered by our exclusive PureLaser™ technology, utilize only high quality medical grade laser diodes (no LEDs) to deliver precise, effective LLLT at 650 nm for optimal hair regrowth.

With options of 148, 272, or 302 diodes, and total power outputs of 740 mW, 1,360 mW, and 1,510 mW respectively, Kiierr caps offer targeted stimulation for fuller hair. Simply use the 148 and 272 models for 30 minutes every other day, or the 302 model for 6 minutes daily, and start seeing results in as little as 6–8 weeks, with significant improvements typically visible within 4 to 7 months.

How It Works

This advanced, FDA-cleared LLLT technology penetrates the scalp to stimulate hair follicles at the cellular level, enhancing blood flow and nutrient delivery to dormant follicles. The result is a revitalized scalp environment that supports natural hair growth cycles, promoting thicker, fuller hair that’s clinically proven to be effective. With over 100,000 satisfied Kiierr customers and a money-back guarantee, there’s no reason to wait. Experience the transformation for yourself and watch your hair thrive!

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. See full policy for details.

Warranty:Kiierr laser caps come with a 2-year warranty, which covers any defects or failures.

Shipping: Orders ship within 2-3 business days via USPS Priority or FedEx. Shipping within the US is free. We ship to all countries and international shipping is $55 USD (plus customs fees charged by FedEx)

Read Full Return Policy

FAQS

How It Works

Start with Ease

Put on your Kiierr Laser Cap, hit the on button, and relax for 30 minutes or less, every other day!

Stimulate Hair Follicles

Our PureLaser™ technology delivers precise wavelengths that energize hair follicles for effective regrowth.

See the Difference

In just 6-8 weeks start seeing fuller, thicker by consistently using Kiierr!

How It Works

1. Start with Ease

Put on your Kiierr Laser Cap, hit the on button, and relax for 30 minutes, every other day!

2. Stimulate Hair Follicles

Our PureLaser™ technology delivers precise wavelengths that energize hair follicles for effective regrowth.

3. See the Difference

In just 6-8 weeks start seeing fuller, thicker by consistently using Kiierr!

See how Kiierr has succesfully helped over 100k customers!

“I purchased my Kiierr cap in 2020 and it has been a great investment for me and my self-esteem. I use it in combination with topical Minoxidil and it really has helped fill out my thin patches. Customer service is helpful and responsive. I definitely recommend this cap if you are looking to get the best results.”

– Thomas P.

Verified Buyer

“By the end of November, I started losing large amounts of hair to the point my hair was so thin you could see my scalp. The crown of my head was almost bald. After 4 months of use, I could not believe what that cap did to restore my hair. The Kiierr Laser Cap is well worth the money and the short time it takes to recover hair loss. I highly recommend this laser cap to anyone for hair growth.”

– Marsha W.

Verified Buyer

“A year ago, I was diagnosed with three types of alopecia and received treatment from a dermatologist, but it was ineffective. In September 2023, I started using a laser cap along with shampoo, conditioner, and DHT-blocking vitamins from a different company. After four months, I stopped losing hair and began seeing new growth. I highly recommend these products, especially since I’m 81 and the dermatologist has given me no hope. The Kiierr laser cap worked for me.” … Read More

– Lenka D.

Verified Buyer

“A year ago, I was diagnosed with three types of alopecia and received treatment from a dermatologist, but it was ineffective. In September 2023, I started using a laser cap along with shampoo, conditioner, and DHT-blocking vitamins from a different company. After four months, I stopped losing hair and began seeing new growth. I highly recommend these products, especially since I’m 81 and the dermatologist has given me no hope. The Kiierr laser cap worked for me.” … Read More

– Lenka D.

Verified Buyer

“Three years ago, my hairline started receding, and although my wife bought me Minoxidil, I found it too time-consuming to apply twice daily. I decided to try a laser cap and chose the Kiierr Model-272 due to its high number of clinical-strength laser diodes and FDA clearance. The Kiierr cap has been a convenient alternative to Minoxidil—just 30 minutes every other day. After using it for a few years, my hairline has stabilized and my scalp is noticeably thicker. I highly recommend the Kiierr laser cap for a hassle-free hair restoration solution.”

– Leonard C.

Verified Buyer

“After years of trying various hair loss treatments like minoxidil, finasteride, and PRP with little success, I was ready to give up. However, the Kiierr Laser Cap proved to be a game-changer. Despite my initial doubts, consistent use over a few months led to noticeable improvements—my hair became thicker and I saw new growth in previously thinning areas. The Kiierr Laser Cap is easy to use and has made a visible difference compared to other treatments that failed. I highly recommend it to anyone struggling with hair loss.”

– Charles L.

Verified Buyer

“I purchased my Kiierr cap in 2020 and it has been a great investment for me and my self-esteem. I use it in combination with topical Minoxidil and it really has helped fill out my thin patches. Customer service is helpful and responsive. I definitely recommend this cap if you are looking to get the best results.”

– Thomas P.

Verified Buyer

“By the end of November, I started losing large amounts of hair to the point my hair was so thin you could see my scalp. The crown of my head was almost bald. After 4 months of use, I could not believe what that cap did to restore my hair. The Kiierr Laser Cap is well worth the money and the short time it takes to recover hair loss. I highly recommend this laser cap to anyone for hair growth.”

– Marsha W.

Verified Buyer

“A year ago, I was diagnosed with three types of alopecia and received treatment from a dermatologist, but it was ineffective. In September 2023, I started using a laser cap along with shampoo, conditioner, and DHT-blocking vitamins from a different company. After four months, I stopped losing hair and began seeing new growth. I highly recommend these products, especially since I’m 81 and the dermatologist has given me no hope. The Kiierr laser cap worked for me.”

– Lenka D.

Verified Buyer

“Three years ago, my hairline started receding, and although my wife bought me Minoxidil, I found it too time-consuming to apply twice daily. I decided to try a laser cap and chose the Kiierr Model-272 due to its high number of clinical-strength laser diodes and FDA clearance. The Kiierr cap has been a convenient alternative to Minoxidil—just 30 minutes every other day. After using it for a few years, my hairline has stabilized and my scalp is noticeably thicker. I highly recommend the Kiierr laser cap for a hassle-free hair restoration solution.”

– Leonard C.

Verified Buyer

“After years of trying various hair loss treatments like minoxidil, finasteride, and PRP with little success, I was ready to give up. However, the Kiierr Laser Cap proved to be a game-changer. Despite my initial doubts, consistent use over a few months led to noticeable improvements—my hair became thicker and I saw new growth in previously thinning areas. The Kiierr Laser Cap is easy to use and has made a visible difference compared to other treatments that failed. I highly recommend it to anyone struggling with hair loss.”

– Charles L.

Verified Buyer

What’s the right cap for me?

Kiierr Laser Hair Growth Caps use Low-Level Laser Therapy (LLLT) to stimulate hair growth
and reduce hair loss through photobiotherapy, where laser light (diodes) enhances cell
metabolism and protein synthesis.

Pro Laser Cap

148 Diodes – Affordable Power

For early stages of hair loss or those on a budget, the 148 Pro is ideal, offering slower but steady results.
Most users see initial results
in 6-8 weeks.

FDA Cleared for Safety & Efficacy

Laser Strength 740mw

30 Minutes Treatments Every Other Day

Coverage

~~$999.00~~ $749.00

Premier Laser Cap

272 Diodes – Advanced Power

If you’re looking for more significant and quicker regrowth, the 272 Premier is our best seller.
Most users see initial results
in 4-6 weeks.

FDA Cleared for Safety & Efficacy

Laser Strength 1360mw

30 Minutes Treatments Every Other Day

Coverage

~~$1299.00~~ $899.00

MD Ultra Flex

302 Diodes – Maximum Strength

The 302 MD Ultra Flex delivers the fastest results with superior comfort. It’s ideal for severe hair loss and features a soft flex fit for maximum comfort.
Most users see initial results
in 3-5 weeks.

FDA Cleared for Safety & Efficacy

Laser Strength 1510mw

6 Minutes Treatments Every Other Day

Coverage

~~$1949.00~~ $1699.00

What’s the right cap for me?

Kiierr Laser Hair Growth Caps use Low-Level Laser Therapy (LLLT) to stimulate hair growth and reduce hair loss through photobiotherapy, where laser light (diodes) enhances cell
metabolism and protein synthesis.