I’ve been using this laser hat for the last 5 years religiously to help regrow my hair and I’m super happy with the results. This device stimulates hair follicles to grow and when used in combination with minoxidil it gives fantastic results. I’ll be using a laser hat for the rest of my life! Thanks Kiierr!

My hair had been falling out non-stop due to. 3 years chronic stress. My part continued to widen and I started seeing my scalp through my hair. My hair clogged the drain, all over my clothes, and filled my hair brush. I used to love my hair but I began to dread looking in the mirror. I'm 64 so it was probably only going to get worse. Seemed so ridiculous feeling depressed over something so little compared to other people's problems. But thats what I felt. I spent a lot of money on supplements, exercised, ate the right things, and tried every product that sounded like if would be at least somewhat effective Nothing worked except a serum from a human bio compounding pharmacy specifically tailored to clients. It required a prescription. But results were negligible and cost way too for the outcome. I stopped using it. I gave up and turned to baseball caps and wigs. Was reluctant to purchase a Kiierr Hair Growth cap. Sounded too good to be true but had read a lot about laser therapy for hair growth Decided to try it and I am SO glad I did! Baby hair is growing, and my part is starting to fill in!! Now I'm excited to look in the mirror every couple of weeks to see how it's grown. Kiierr cap is so easy to use. I can take and wear it anywhere. Even running errands, so I'll never miss a day. This product actually works!!!! For realz. A lot of products are poorly (cheaply) made. They either break, or there's some other problem. I'm impressed with how well Kiierr is made. I haven't had a single problem. THANK YOU KIIERR!!!!!

I am amazed at how well the Kiierr laser cap works! I have stopped losing hair and continue to grow new hair. I definitely noticed a change after four months of use. I recommend 100%.

The personnel at the Kiierr laser cap company are the most helpful and service minded people I have ever purchased an online product from. From ordering and purchasing our first Kiier laser cap to purchasing extra batteries for the laser cap. There was never any hold up or lag time concerning getting a response to my email inquiries, ordering the items I needed to the items being shipped to my home. This was also the first online company I have had follow up emails for some of my inquiries.

I used my cap for two years and people, including myself, noticed my was getting thicker. The cap malfunctioned and i kind of forgot about it for a a year. Now i notice that my hair is thinning out again. I am getting a new cap and i am very excited to start using it again. This time i will document it to share with others. Had i realized how well it was working i would have never allowed any lapsed time. My rating would have been five star accept it did malfunction, but Kiierr is standing behind it.

I've been using the 302 MD Ultra for about two weeks. It's too soon to make a report now, but I'm looking forward to sending a positive report in the future!

I purchased the Kiierr 272 cap in april 2021 as a birthday present for my husband. The first cap that I received was too small for his head, I contacted Kiierr and customer service quickly sent me the bigger size one. My husband has been using it as directed and I noticed that his hair is thicker and healthier. The hair loss was basically stopped in its tracks, and I have observed new hair growth. After over 4 years of use I can say that I am very satisfied with the results.

I had a problem with my laser cap. The customer service department communicated with me often which I thought was unusually good. It was an overall position experience. They showed customers satisfaction is the goal of this company.

I bought the KIIERR Redlight hat in January of 2025. I had previously received a hair transplant and was told by the doctor to buy the KIIERR red light therapy hat to support and stimulate the new and old hairs. I wore the hat as instructed and am now 8 months out. I believe the redlight therapy stimulated blood flow to the scalp which is a vital component of hair regrow. I am pleased with the results and will continue to use KIIERR redlight therapy. I am 67 years old. I’m happy to talk with anyone interested in hearing about my experience.

I am thrilled with the results of using the laser cap and the DHT blocking/vitamin supplements. I’m now 68, and I got the cap 5 years ago when I had too many balding areas on the back of my head to put my hair up. My hair is thin to begin with, and I’d been losing lots of hair when I washed my hair. When I could no longer put my hair up, I discovered the laser cap. I was religious using it for a few years, and then relied more on the supplements. I still take them daily and seldom lose any hair. This picture of my hair up was taken today. I don’t need to use the cap like I did to maintain the hair growth, but I’ll never give up the supplements to maintain what I’ve gained. I’m so happy I got this system, and I just recommended it to a friend with the same issue as she gets into her 60s.

Been using the cap for three months now along with the shampoo and hair vitamins. The texture of my hair has improved and it feels a little thicker also. I purchased the 312 MD laser cap and use it once a day for 5 minutes. Some caps take 30 minutes, but I am glad got one that doesn’t take that long. Photos below show when I received product in June and second photo in September. I am 71 and always had thin hair as do all the women in my family. I am starting to like my hair again, the natural color gray& blonde is very pretty in person I just wanted a little thicker hair and looking forward to seeing 6 months results. I used the Affirm payment option, and it was a good experience, making payments is easy. Kiierr customer service is responsive as well- I had a couple product questions but no product issues

I bought the cap and battery in March of 2021. I used it for two years and i had many comments on how my hair was thickening. Now after a year of not using the cap my hair is thinning out again. I am about to start using it again as suggested. I found out that it really did work.

A great way to regrow hair without ingesting supplements or using gimmick topical solutions. The ease of use is tremendous and convenient as well. I found it best to pick a consistent time of day to wear the cap every other day and stick with it, so you don't need to worry about forgetting a session. For me it is during lunch break when I know I won't be up and running around. The regrowth was visible and my wife started seeing the results long before I did.

I purchased the Kiierr 312 red therapy cap in April 2025 and received the product in May of 2025. I've been struggling with hair loss for many years due to thyroid issues and menopause/aging. The hair shedding really began to increase so it was time to invest in something to help. After approximately 2 months of consistent use I noticed the shedding had really subsided. Now, entering month 4 I can see and feel new growth! My hairdresser can tell the difference too. I'm excited to continue my journey with the Kiierr 312 cap and can't wait to see what the next few months look like! I would 100% definitely recommend this product.

After several years of use my cap stopped working. Allsion from customer service helped me troubleshoot, suggested a replacement battery pack and because of some logistical/timing issue she was able to get me a free battery pack replacement which solved my problem. THANKS!

Easy to use, i use it every day in my bed before sleeping. The customer service is very reactive.

I am so happy I bought this. I actually see hair growing in and it is thicker. Worth it.

I have had thinning hair for about ten years. We found Kiier while looking for hair loss/retention solutions. Since purchasing the “helmet” and using it as recommended by the manufacturer I have, and my husband has noticed, that my hair has stopped thinning and has actually regrown and is fuller and thicker.

I’m using the light therapy along with medication and topicals and it seems to help.

Been using the cap for going on 5 years now and it has been great. Helps especially with itchy feeling that is so annoying with hair loss. Hair loss has flattened out since using which is great. Hope to use it for many more years to come.