I have been very impressed with the results of the Kiierr red-light therapy cap. While I do not have "before and after photos" of my results, I have noticed my hair growth has improved with less thinning around my hairline and crown of my scalp. The customer service provided by the company has been outstanding, and I will recommend this product to anyone needing help with thinning hair.

This has been a great addition to my beauty routine. As a woman in my late forties, I purchased the cap when I noticed patches of thinning hair which made me feel very self-conscious. I tried other topical products, but they didn't do much. I have been using the Kierr cap for around 4-5 years now, I have noticed I have more even hair growth in the areas that concerned me (temples and top of head). I feel much more confident. Customer service has been great also for anything I needed to reach out for.

I am absolutely amazed at the results from my Kiierr cap. Not only have I grown fuller hair but it is healthier and thicker. I used to have baby fine hair and now it is naturally thicker and fuller. I will continue to use it because it is so healthy for not just my hair but my scalp.

I've been very impressed with the laser cap I purchased a few years ago. I've also been impressed with the support I've received from the company. Everyone has been very attentive to my needs.

Kiierr Hair Laser Cap definitely improved my hair density and strength over constant use during last 3 years. The cap is very safe and easy to use. It requires only 30 minutes of use every other day and it is simple as wearing a hat – no messy topicals or complicated routines. The treatment is completely painless and has zero side effects. I definitely see my hair improvement and less hair loss over last 3 years, Very active supporter of Kiierr Hair Laser Cap and company's superior customer service.

Well packaged, shipped relatively quickly, when I had questions the team responded quickly and were flexible.

I ordered my 272 Premier Laser Cap directly through the Kiierr website and it arrived very quickly, excellently packaged, brand new, and in perfect shape! I only received my Cap a couple of weeks ago, so it's a little too soon to expect results yet, but so far customer service has been great! They have responded very quickly to my email inquiries! I also ordered some shampoo, conditioner, and vitamins from the Kiierr site to try those as well. I will post an updated review with photos when I start getting results.

Using Kiierr now for four years has helped me immensely. I feel it’s enabled me to hold onto to the hair I have while encouraging new growth and that’s helped my confidence. Thank you! The helmet is easy to use; I usually put it on while I’m having breakfast and reading the paper. And by the time I’m finished eating, my helmet shuts off. I’m so glad there’s a product that can help with hair loss/thinning and that I’ve had positive results. Plus the Kiierr support team is awesome! Always quick to respond via email and super helpful with tips. Thank you Kiierr!

Allison at Kiierr was amazing! She was very responsive and got all of my questions answered right away!

I have had amazing results with my Kiierr Laser Cap. My hair is fuller, longer, and much healthier overall. I am a very happy customer!

I am thrilled with my FDA cleared Kiierr red light laser cap! I purchased the Kiierr Laser Cap System in Sept 2022, and started to use my cap every other day as per the directions. The only thing I noticed after the first 1-2 treatments was some mild scalp irritation but that quickly resolved. The cap was comfortable to wear and the battery pack allowed me to walk around during each treatment so I could multi task or do some light chores if I wanted to. I just turned on the cap and after 30 min the timer ended the treatment. Within 3-3. 5 months I noticed less hair in the drain after I took a shower, and by month 5 my hairdresser commented that my hair was less thin on top! I am now at the point where I use the cap every couple days and I’m thrilled that I’ve maintained my growth. In addition to the FDA clearance, I invested in the Kiierr cap because of their warranty and refund guarantee should you have no hair growth. With a company that stands behind its product, I knew there was limited financial risk. I recommend the Kiierr Laser Cap System.

My name is Kathleen, and I am 68 years old. In my early 60's I noticed my hair had thinned alot on the top, which was upsetting as I always had nice hair. My girlfriend owned a hair salon and said that laser therapy can help to grow hair. So I researched the internet and decided on the Kiierr Laser cap. I started using it in June of 2020 and followed the directions of every other day for 30 minutes. After a few months I noticed some new growth and kept using the cap. Now, it's been 5 years using it and I've been very satisfied with the results. I recommended it to my sister so she bought one and is also happy with it. Give it a try. . . . you won't be disappointed. Their customer service is also very good.

I purchased my Kiiierr Hat back in 2022 and Since then ive used it in conjunction with Rogain I have noticed my hair got much thicker and more dense till this day almost three years later! Definitely a thumbs up!

I bought the Kierr hair regrowth helmet as a Christmas gift for my husband and sons-in-law, and it's been one of the most satisfying purchases we've made! They followed the instructions consistently, and within just three months, we began seeing new hair growth. Encouraged by their results, we girls started using it too—and we’ve noticed real improvements! At the five-month mark, the cord connecting the cap to the battery pack began to have issues. I reached out to customer support, and they were incredibly helpful—quickly troubleshooting the problem and sending a replacement cord and battery pack. Thank you, Kierr, for not only delivering visible results but also standing behind your product with exceptional service. We're thrilled!

My hair began to thin as I got older. I could only wear it super-short and even then it looked spare. I tried Minoxodil which had unpleasant side effects and which I don’t recommend. At the advice of a physician, I bought the Kiierr Premier Laser Cap. I use it on alternate days and as you can see from my photos, I can now wear my hair much longer and it isn’t as thin and limp as it was. It’s costly, but it’s a purchase that lasts a long time—mine for four years now—and Kiierr is a responsive company if there are any issues. I definitely recommend this product and love my new hair.

I’ve been using the Kiierr laser growth hat for a year and a half now, and I’m truly pleased with the results. I am a female 78 years old, I was experiencing noticeable hair loss due to age and the stress of a major move. I didn’t want to go the route of medications, so I decided to invest in this red light therapy cap—even though it was expensive—hoping it would be a more natural, long-term solution. For the first year, I used it every other day, and now I use it daily. Alongside the cap, I also began taking the Kiierr hair growth vitamins and using only bar shampoo and conditioner for hair growth. Gradually, I started to notice changes. My hair stopped falling out, it began growing faster, and although the thickness is returning slowly, I do believe it’s improving. This has been a gentle and non-invasive way to support my hair health, and I’m glad I made the investment. I plan to continue using the cap every day and would recommend it to others looking for a drug-free option for hair regrowth. So far, it’s been a good choice for me—and the before and after photos tell the story best!

Did extensive research on the best laser cap to preserve hair. Settled on the Kiierr 272 MD XL cap. I have been using this product for over 2 years and have been happy with both performance and results. The Kiierr cap is easy to use and travel with. The ordering process was easy and the product was delivered on time. If you are in the market for a laser cap, Kiierr is a great choice

I was diagnosed with Lichen Planopilaris in 2021. This is a disease that is still being studied. Currently there is not an actual cure. I was told by the doctor that I would have significan hairloss and I do have hairloss above my ears. The doctor did tell me I could try Kiierr cap and see if it might help. I immediately purchased one. The use of the cap has absolutely calmed the inflamation and the hair loss. Because there is not a lot of information or hope about this disease I also started to take a hair loss supplement. I am happy to report that 4 years later, my hair looks good and no one would know I have such a devasting disease. My doctor said it is OK to use the cap daily and I do that as often as my schedule permits instead of every other day. I highly recommend adding the Kiierr cap to your preventative/corrective routine for hairloss. It has been a wonderful and helpful tool for me.

Their customer service is fantastic and easy to deal with!!!

Very helpful with any questions you have. I appreciate the service.