272 DIODES
312 DIODES
302 DIODES
HAIR & SKIN
SKINCARE ESSENTIAL
PATENTED TECH
ENHANCE RESULTS
100,000+ HAPPY CUSTOMERS
Advanced Red Light Therapy for Hair Thinning & Loss
Powerful, clinically proven laser caps to restore thicker, fuller hair – all from the comfort of home.
✓ Only 6 Minutes A Day
✓ Clinically Proven Results
Shop Red Light Laser Caps
As seen in
Experience Real Hair Regrowth In 6 Weeks
An impressive before/after from real customers on how Kiierr Laser Caps played a key role in their hair restoration.
Hair Thinning
Hair Loss
Thinning at Temples
Bald Spots
Receding Hairline
Widening Parts
It’s a worthwhile investment!
I started using my Kiierr cap almost 4 years ago at 63. After the first 6 months or so, I noticed that there was less hair caught by my shower drain strainer than in the past. My temples and the thinning hair on my crown have filled in.
Frank L
My hair is thicker than it’s ever been!
I suffer from hormone-related hair loss. It was devastating to see my hair become thinner & thinner. I have been using Kiierr for 10 months now. At first I was skeptical (was this too good to be true?), but I was astounded when I started seeing growth after 6 weeks!
Denise C
My hair is a lot thicker!
Thicker hair on my crown has been the most noticeable change since starting with Kiierr. Over the last several months, my hair has visibly thickened, especially in areas that were previously thinning.
Mark R
My hair is thicker and fuller!
After contracting COVID, I experienced severe hair loss. I tried the Kiierr Laser Cap and after 5-6 weeks, new hair began growing on my bald spots. By two months, my hair became thicker and fuller. After three and a half months, I was thrilled with the results and highly recommend!
Marsha W
Nothing worked until Kiierr!
After spending 10 years trying other hair growth products, I heard about the success of laser therapy after researching. As you can see, during the 3 year process of using the Kiierr Hat, I could see remarkable results after only 6 months.
James R
The Kiierr Cap really helped!
I've always had thin hair in the crown but 3 months after having Covid, my hair started coming out in handfuls. The Kiierr cap was what helped along with Kiierr’s shampoo, conditioner and biotin.
Karla P
Recommended by my doctor!
I suffered from a mold exposure that caused excessive hair loss, and this treatment was recommended by my doctor. With continued use of the cap, the vascularity of my scalp has improved. The cap has helped significantly in promoting new hair growth.
Jenna P
Reversed my menopause thinning!
Noticeable menopause thinning led me to try Kiierr's hair cap. After using it consistently three times a week for several months, I began to see real results. My hair started growing back. Even my friends & hair stylist noticed the improvement!
Karen N
I love my Kiierr cap!
I use it faithfully and have really seen a difference in my hairline. It was receding on the sides, temples and front, but has definitely stopped and is actually filling in with hair! I would definitely recommend a Kiierr Cap
Lisa L
Kiierr saved my hair!
At 65, my hair started falling and I was nearly bald. I didn’t want a transplant and couldn’t see a doctor during COVID. I tried Kiierr, and it truly helped. Thickened my hair and stopped the loss. I recommend it to everyone facing hair loss.
Jorge V
This cap made me look younger!
After 5 months of using the Kiierr Laser Cap, my hair is fuller, and I feel years younger. I was skeptical at first, but after speaking with their helpful team, I decided to try it. To my surprise, it really works! Plus, their customer service is fantastic. Highly recommend!
Significant hair growth!
I have been using the Kiierr Hair Restoration Cap for the past 18 months. I have received significant hair growth. Attached are my before and after photos showing the hair growth. I highly recommend the Kiierr Cap.
John J
It’s a game-changer for my hair loss
Easy to use cap which I have been using for about 5 years now, every other day. My hair strands have become thicker & have less shedding. I would definitely recommend the Kiierr cap, especially due to the scientific backup.
Vincent R
Highly recommend all Kiierr products!
The laser cap definitely helped regrow hair over the balding spot on the crown of my head and on my thinning/receding front hairline! I also use the Kiierr shampoo, conditioner and vitamins. I highly recommend all Kiierr products!
Dennis F
Amazing for male pattern baldness!
I highly recommend this product to anyone with hair loss. Male pattern baldness started in my 20s with a receding hairline and thinning crown. I have seen awesome results with red light therapy and it was worth every penny.
Seth G.
It really does work!
After using the Kiierr laser cap, I have regrown a large amount of hair. I am so happy with my results and plan to continue use forever! If you are considering Kiierr, I definitely recommend it. It really does work.
Abby A
The Kiierr cap really worked for me!
I purchased the Kiierr cap 4 years ago. I was losing a great amount of hair every time I shampooed. The cap really worked for me. I recently went to my dermatologist and mentioned the cap & he said that “good laser caps really do work!”
Pauline C
Noticeable hair growth with Kiierr!
I was skeptical at first, but after weeks of using the Kiierr Laser Cap, my hair became thicker, and new growth was visible. I’m convinced it works and will keep using it to maintain my results. Thank you, Kiierr!
Manny E
Bestseller
Kiierr Laser Cap Hair Growth System
A clinically proven, hands-free solution for thicker, fuller hair—just wear it and let the technology do the rest.
Clinically Proven for Hair Regrowth
Visible Results in 7 Months
Effortless, Hands-Free Design
Thinning
Balding
Receding
Start Your Hair Regrowth Journey
7 month money back guarantee
The Quiz
Find Your Perfect Regrowth Plan
Take our quick quiz to discover the perfect hair regrowth solution for you.
Take The Quiz
Approx. 2 Minutes
Life-Changing Hair Transformations
See how Kiierr has transformed hair regrowth journeys with real success from real people.
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.
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.
1/4
2/4
3/4
4/4
How Red Light Therapy Revives Hair Growth
Using medical-grade laser technology, Kiierr stimulates blood flow, reactivates dormant follicles, and strengthens hair for long-term regrowth.
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.
Clinically Proven to Outperform Other Solutions
Thousands have switched to Kiierr after seeing little to no results. Here’s why
46.6%
Growth
Competitor A
8.6%
Competitor B
6.6%
*Based on customer feedback and reviews. Individual results may vary.
Why Kiierr Stands Above the Rest
Cutting-edge technology, proven results, and effortless convenienc —discover what makes Kiierr the top choice for hair regrowth.
Dermatologist Recommended
Free 2-day Shipping
Quick & Easy Returns
FDA Cleared
2 Year Warranty
Trusted by
Thousands
Common Questions About Kiierr
Will laser therapy work for my type of hair loss?
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!
Which laser cap should I choose?
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.
How long will it take to see results?
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.
Why should I buy your cap vs competitors?
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.
Do you offer payment plans?
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. See terms and conditions here.
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!
Is laser therapy safe to use?