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Check Out The Impressive Results Others Have Achieved
With consistent use, our customers have experienced thicker, fuller hair and significant hair regrowth.
How Kiierr Laser Caps Work
No tech skills needed! Just wear the cap and let the FDA-cleared low PureLaser™ Technology stop the loss and regrow your hair, whether you’re at home or on the go.

Hair Loss Stops
In the first few weeks of using the cap for 6-30 minutes (depending on the laser strength in our caps) every other day, you’ll notice less hair loss as the low-level PureLaser™ Technology wakes up your hair follicles and stops them from shrinking due to Androgenic Alopecia.

New Hair Starts Growing
As you keep up with your routine, you’ll begin to see new hair filling in where it was once thinning. The laser light increases blood flow and delivers all the nutrients your hair needs to grow stronger and thicker.

Enjoy Thicker & Healthier Hair
After 7 months of consistent use, you’ll finally see what you’ve been waiting for: thick, full, and strong hair covering the areas that were previously thinning or bare. To maintain these amazing results, keep using the cap regularly.
Join 100K+ Happy People Who’ve Transformed Their Hair
See visible changes within 6-8 weeks
Scientifically Proven
LLLT Technology for Hair Regrowth

Restore Your Hair Today!


Restore Your Hair Today!

Kiierr Vs The Rest
Features

Used & Recommended by Doctors


Convenient At Home Use


7-month Money Back Guarantee


Clinically Proven


FDA-Cleared Technology


PureLaser™ Technology


HOLIDAY SALE
Kiierr Laser Cap
Starter Kit System

4.9/5 based on 100,000+ Happy Customers
(wear your laser cap anywhere)
7 MONTH MONEY BACK GUARANTEE

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.
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!
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)

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!
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.
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.
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.
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!