I researched and read many reviews before making the investment in the Kiierr laser cap. After almost a year unfortunately I do not see any difference. I purchased the Kiierr vitamins and also a filte... Mehr ansehen
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Das sagen Bewerter
Trusting my belief in red light therapy to reignite my hair follicles. 5 weeks in and 6 minutes a day is a breeze. The Flex Cap is comfortable and fits well. Very optimistic about successful results m... Mehr ansehen
Unternehmen hat geantwortet
I just received my cap yesterday, it’s well packaged and it seems to be easy to use, but shipping time was a problem, it took 3 weeks to receive since I placed the order. I’m all about to see good res... Mehr ansehen
After using the red light cap for a couple of years and loving that, I also used the DHT blocking shampoo and conditioner and have recently tried their new hair dye shampoo. It’s been great so far! I... Mehr ansehen
Unternehmen hat geantwortet
Unternehmensdetails
Vom Unternehmen geschrieben
Kiierr Laser Hair Growth Cap is the worlds finest hair growth product. Our FDA cleared laser caps are 100% safe and effective to regenerate hair follicles.
Kontaktinformationen
3500 Whiteway #10, 59701, Butte, Vereinigte Staaten
- service@kiierr.com
- kiierr.com
Hat 46 % seiner negativen Bewertungen beantwortet
Antwortet meist innerhalb von 1 Woche
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Great product, great customer service
I have been happily using the Kiierr Laser Cap for a number of years. My problem area, which is my temple has filled in quite well. It’s so easy to incorporate as my morning ritual along with my coffee. I find their customer service is very helpful and very quick at addressing any questions. I highly recommend the product and the company.

Antwort von Kiierr Hair Growth
No noticeable difference
It is very easy to use but I cannot say I've noticed a difference. It may be that it has help halt my hair loss, but, after nearly 6 months of daily use, I do not see any meaningful increase in hair count or thickness. Also, it does not sit on your head as naturally as many of the pictures show.
Love my Kiierr laser haircap!
I have been using my Kiierr laser hair cap since 2022 and have had amazing results. My hair loss was reversed and now my hair is healthy and full. I’m so glad my doctor recommended this to me!
Kiierr Laser Hat
I did a fair amount of research before purchasing a laser hat. Kiierr is right at the top. Ordering was easy and delivery quick. I've reached out by e-mail two times with questions and received next day responses both times. Product is working as expected so far.
I have been using the hat for 3+ years…
I have been using the hat for 3+ years and have been pleased with the results. The customer service is top notch. Would for sure, and have, recommend.
The money back Growth Guarantee is a SCAM!!
I purchased a Kiierr laser helmet in July 2025, one of the reason was because of the money back Growth Guarantee, advertised in big bold letters on their website.
After about 4 months of using the helmet consistently as instructed I was very concerned because I saw ZERO improvement. I reached out to customer service I asked them if I could return the helmet. I communicated with Steven,the Department Manager. In that conversation, I told Steven when I purchased the helmet, and he told me I had to wait at least 7 months before returning the product. Then he gave me the instructions to register the device, which I did immediately. This is all documented in the emails.
I followed that instruction and kept using the device for 4 more months. After 8 months of using it not only had I still seen no regrowth whatsoever, but the bald patch on my crown had widened.
When I contacted Kiierr again after 8 months to return the helmet, Kiierr refused the return! They said the reason was because I had registered the device too late.
So to be clear: their own support manager told me to register the product months later, I followed those instructions in good faith, and then the company denied the refund based on the timing of the registration.
I responded providing the full email correspondence showing exactly what happened, including the instruction from their support manager Steven to register the helmet. And after that, they went silent! They stopped responding to any emails. Why would they go silent? Obviously they know they're in the wrong.
I bought this product with the understanding that if it did not work after the required usage period, I would be able to return it. Instead, after seeing zero improvement, and after the bald area on my crown had got worse, I was denied because of a registration issue that I addressed exactly when their own support team told me to.
I regret buying a cheaply made product from these dishonest people, there are better companies out there, I got a different helmet from another company and I'm much happier and already seeing better results.
Edit: Kiierr tried to take down this review! That tells you everything you need to know. They flagged it as defamatory, Trustpilot had a look at it and found no defamation whatsoever. Now that the review is up they made a reply coming up with all sorts of excuses! "We were willing to do this.. and do that..". All lies. Again, there are better companies out there with better products and customer service!

Antwort von Kiierr Hair Growth
Kiierr red light cap- easy to use
I purchased the Kiierr red light cap (302 diodes) hoping it would help with my thinning hair. I am a woman in my mid-fifties and used the cap consistently for about 7 months exactly as instructed.
Unfortunately, I did not see noticeable improvement in hair growth or thickness during that time. The cap itself is comfortable and easy to use, but it did not provide the results I was hoping for.
Customer service did reply to emails promptly, which I appreciated. However, when I contacted them about returning the device because it wasn’t working for me, it was very difficult to change their position. The conversation often shifted toward encouraging me to upgrade to a more expensive model instead.
Also be careful to read the details of the 7-mpnth growth guarantee. It requires strict documentation, including photos before starting, monthly photos with time stamps, and final after photos.
Now I am stuck with an almost $600 device that, at least for me, I cannot use to achieve the results it promises. It may work for some people but after seven months of consistent use I personally did not see meaningful results.

Antwort von Kiierr Hair Growth
We love this product
We love this product! Both my husband and I have been using it for six months and we are seeing amazing results. Thicker hair and it’s so easy to use. We also experienced great customer service when we had questions.
Kiierr leading with great products and services
I can happily say I’ve been a repeat customer of Kiierr products including the laser cap and I have had wonderful results. I would definitely recommend this company to anyone desiring an improvement in their hair and scalp. Also, Kiierr customer service is top-notch with an exemplary response time. Lastly, their website is easy to use and has a variety of your favorite products to select from for safe shipment. Kiierr staff works seamlessly allowing you to reach out to customer service at any time. I can confirm that you will receive an almost immediate response and support from Kiierr. This company not only has great products, but they also really do go above and beyond to support their customers.
This company has absolutely horrific…
This company has absolutely horrific communication. Their phone might as well be non-existent and their emails are incredibly slow to answer. I've been waiting for one month for an almost $2,000 product.
Once I finally got an email response they are generic in nature with no resolution.
Not working after 1 use, got a replacement
used the cap 1 time, and it stopped working right after emailed customer service 3 days ago, and still no answer
Correcting my 1 star review to 4 stars. I was contacted by Steven from Kiierr. He helped me to replace the cap quickly. It came without the charging device, later Steven sent me the charger. Because of this inconveniences i am giving them 4 stars. I am grateful to customers service handling my concerns and rectifying the issue. I can't say anything about the device making any difference on my hair growth, will be updating after 6 months of use.

Antwort von Kiierr Hair Growth
Kiierr 272CS Hair Growth System
My husband purchased the Kiierr hair growth system on 4/10/22 and I have noticed to my surprise that it has helped my hair fill in sparse areas on my head. I am very pleased and will continue to use this product for as long as I can. When your hair looks better, you feel better too. Diane McKinney
I was very impressed with how…
I was very impressed with how responsive the company was. I initially ordered the wrong model number and they straighten this out immediately!
Was very impressed with the quality.
The company Kiierr is honest
The company Kiierr is honest, helpful and transparent. Product working well. Easy to use and easy to charge. I like the carry case too
Great customer service!
Great customer service. My question and resolution were taken care of quickly. I have have always gotten a quick response to any concerns. I have been using the cap for about 5 months and auto subscribe to the hair vitamins. I'm definitely starting to notice a difference.
I just started using it and am excited…
I just started using it and am excited to see the results. I have tried all kinds of pills and creams and have had no luck.
Quality Product
I did a lot of research before purchasing. I liked the way Kiierr presented itself and offered a growth guarantee. It took a little bit of time to get my cap and it felt like I was in limbo for a little bit but once I got confirmation that it was shipping, it came in the two days. I had some confusion with the warranty and the extended warranty with regards to the refurbished model.
Easy to use and supportive information…
Easy to use and supportive information available to keep you accountable to your commitment. The before and after pictures really help you see a difference that otherwise you may miss
Website well laid out and understood
Website well laid out and understood. Shipping was quick.
Have noticed stands growing and seeing…
Have noticed stands growing and seeing a little more growth from stubble
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