Kiierr Hair Growth Reviews 

361
•
TrustScore 4.5 out of 5

4.4

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Review summary

Created with AI, based on recent reviews

Evaluating 151 reviews, reviewers overwhelmingly had a great experience with this company. Customers frequently praise the comfortable design and high quality of the laser caps, finding them very easy to incorporate into daily routines for hair growth. Consumers often mention that the customer support team is exceptionally helpful, responsive, and quick to resolve questions or hardware issues. Some reviewers were not happy with sizing issues, noting that the caps felt too small, uncomfortable, or did not match the advertised fit. Additionally, a few people experienced frustrations regarding delayed shipping updates or difficulties getting timely replies from customer service representatives when seeking assistance.

What people talk about most

Product

Reviewers highlight positive aspects of product quality, noting that the device is comfortable,... See more

User experience

Reviewers mention positive feedback about user experience, highlighting that the setup and purchase process... See more

Quality

Users describe positive interactions with quality, expressing strong satisfaction regarding the solid build... See more

Customer service

People report positive experiences with customer service, noting that support agents are fast, responsive,... See more

Reviews shaping this summary

Rated 5 out of 5 stars

I’ve struggled with female pattern balding my entire life and, honestly, I had almost given up hope. I decided to invest in the Kiierr Laser Cap and have been using it alongside topical minoxidil. For... See more

Rated 5 out of 5 stars

I am a physician and have 2 caps at my office and my daughter also uses one- I discovered the new dual cap and ordered it. Due to my own address typo error it went missing. I have never had such exce... See more

Rated 5 out of 5 stars

Kiierre's customer service is outstanding , exceeds most companies I have ever dealt with. in addition their products are high quality, and dependable. I have a laser cap that has helped me treme... See more

Rated 5 out of 5 stars

I just received my Kiierr 272 laser cap and my experience with the company has been great so far. Ordering was easy, shipping was prompt, and the packaging felt premium and well thought out. The c... See more


Company details

Written by the company

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.


Contact info

4.4

Excellent

TrustScore 4.5 out of 5

361 reviews

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1-star

No recent history of asking for reviews

This company hasn't invited customers recently, so reviews may not be representative

Replied to 25% of negative reviews

Typically replies within 1 week

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4.4

All reviews

(361)

150 reviews in the last 12 months

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Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

Very good build structure

Very good build structure. Love that it's FDA-approved and I was referred this product from my long time dermatologist. Good quality layers and not cheap LEDs thats basically just putting Christmas lights on your head.

September 5, 2026
Unprompted review
Rated 5 out of 5 stars

Its ease of use makes it easy to be consistent

Once I decided that Kierr was the brand of LLLT that I was going to buy, I found their website to be very straightforward and informative about their products.
The cap is easy to use and the instructions are clear. You can just sit with it on while watching TV or reading a book. I massage in a growth serum between days. I can’t wait to see the results.

August 22, 2026
Unprompted review
Rated 5 out of 5 stars

Kiierr EDUCATES the consumer on the…

Kiierr EDUCATES the consumer on the evidence-based science behind red light therapy. I enjoyed learning more about the benefits/results of this modality. Red light has proven to stimulate hair follicles that, in turn, stimulate greater blood flow to hair follicles. The end result is enhanced growth. So, I made the wise decision to give it a try. I'm glad I did!

August 26, 2026
Unprompted review
Rated 5 out of 5 stars

Great Service Department

I purchased a Kiierr laser hair growth stimulator 5 years ago. I haven't used it in several years but brought it out recently only to find I was having some issues with the battery pack.
I sent an email to Kiierr and Steven, the service manager, responded the next day with advice. He gave about 3 different approaches for my problem. And the 1st one worked! I am very pleased with the response and easy fix to my issue. I was sure I would be advised that I would have to purchase a new battery pack, but Steven came to the rescue.

August 14, 2026
Unprompted review
Rated 4 out of 5 stars

Kiierr caps - shipping opportunities

Kiierr laser caps appeared to be the best choice based on the number of lasers and the laser diodes, so I placed an order. Ordering process was easy, but the 2 day shipping promised was more like 5 days and the product did not ship until 11 days after I placed the order. I had to follow up for shipping information and tracking information. Would have been helpful if this information was provided without asking. I now have the product in hand and am excited to see the progress over the next few months.

August 3, 2026
Unprompted review
Rated 3 out of 5 stars

Communication is poor

Communication is poor. I submitted a before picture which they claim was not received. I have not received any due rebates.

August 3, 2026
Unprompted review
Rated 5 out of 5 stars

Outstanding Customer Service

I have just started my treatments and had several questions related to the product. The quick response from Kiierr is outstanding! The treatment plan is simple to follow and although it is too soon to review the efficacy of the product, I have confidence it will work based on my research.

July 26, 2026
Unprompted review
Rated 5 out of 5 stars

My experience dealing with problems of…Battery charger

My experience dealing with problems of my Kierra laser hat was was very pleasant from start to finish.
They replied to my questions & concerns were answered promptly each & every time I had a question.
If I needed a new part to get my hat up & running again it was shipped out that day or the next day without fail.
Steve was very helpful in solving allmy problem.

July 13, 2026
Unprompted review
Rated 5 out of 5 stars

Just received my Kiier laser cap

So far so good. Received my cap a week after I ordered it and it arrived in great condition. Fits my head and sits comfortably. Received a thank you video from seller. Easy to understand instructions and easy to use.

July 7, 2026
Unprompted review
Rated 5 out of 5 stars

I felt hopeless

I felt hopeless, I was losing my Hair, and it became very fine. I started to use the Kiierr Cap , and have been using it now for six Years. I am a Korean Veteran and still have a full, healthy Head of Hair and the Texture is strong and thick. Very pleased with my Hair, thank you Kiierr. J.H.

June 30, 2025
Unprompted review
Rated 5 out of 5 stars

Using the money off coupon.

After debating and debating about whether I wanted to spend a lot of money on this product, I finally decided to give it a try. After ordering it I went to my email and saw that I had a coupon for $125 off. I was sick because I didn't notice it until I had already purchased it. I wrote a quick e-mail and explained my dilemma and they wrote back right away and took the coupon off my order. Yay!

June 25, 2026
Unprompted review
Rated 5 out of 5 stars

Kiierr 272 diode cap has helped me keep my long hair for over five years

I have been using my Kiierr 272 diode laser cap for about five and a half years. I find that it’s been a great addition to my hair maintenance regime. It’s been easy to use every other day as directed and generally easy to travel with while on vacation. And i personally credit it with helping me keep and improve upon my hair density alongside my prescriptions. I do not think I’d be able keep my shoulder length hair—which I get compliments on regularly—without it! I’ll be an avid customer of Kiierr as their customer service is top notch as well; they were quick to help me replace a failing battery and keep my cap going for years to come.

June 23, 2026
Unprompted review

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