Kiierr Laser Cap Review – The Best Hands-Free Hair Loss Treatment Solution?

Laser caps are a popular trending hair restoration treatment on the market. And because of their popularity, they are available in different brands and designs to choose from. 

Today, we’ll review the Kiierr Laser Cap, one of the well-known brands in the laser therapy industry.

Keep reading to discover what this device has to offer. 

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Kiierr Laser Cap Review – What is it and Who is the Manufacturer?

Kiierr Laser Cap review image

This is a laser device that claims to promote hair regrowth. At first glance, you might think that the device is just a baseball cap. However, you will be surprised to learn that beneath this cap are laser diodes.

The device is manufactured by a Utah-based company called Kiierr, which was founded in 2018 by Mike and Jolene Anderson. 

Jolene is married to Mike and they claim to have a background in low-level light therapy also known as LLLT. Also, the duo is reported to have a personal connection with hair growth and hair loss, which is the reason they founded Kiierr. 

That said; besides the laser caps, the brand also offers other natural hair growth products. These include DHT blocking vitamins, shampoo, conditioner, and biotin gummies formulated to promote strong and healthy hair growth. 

That said, the laser cap is their flagship product. But does this device even live up to its claims, or is it just a scam? Keep reading to find out.

How Does the Laser Cap Work? – The Science Behind It

The Kiierr Laser Cap works by using a technology called low-level light therapy (LLLT) to promote healthy hair growth. But what is the science behind LLLT? 

Well, also referred to as low-intensity light therapy, the scientific principle for LLLT is that light emitted from the laser can stimulate hair growth. As a result, this is believed to reduce hair loss. 

When it comes to Kiierr laser caps, they use the same laser diode wavelength per laser just like most other FDA-cleared LLLT devices. These laser diodes usually penetrate the scalp to stimulate the hair follicle cells while also improving blood flow in the scalp. This results in new hair growth with virtually no known side effects.

While there is no sufficient evidence that laser light therapy really supports hair growth, there are several studies to support this claim. For instance, according to a 2014 study published online, LLLT may help stimulate hair growth in men and women. 

Features of the Laser Cap System – What is Included?

Now that you know what the Kiierr Laser cap system is and how it works, let’s take a look at its features. This way, you can decide if it is really worth the money or not. 

*Laser Helmet

Kiierr offers their laser helmet in two versions, including the 148 Pro and the 272 Premier. While both types of laser helmets are relatively similar in design, they are not the same.

For instance, the 148 Pro laser helmet boasts 148 laser diodes while the 272 Premier Laser cap comprises 272 diodes. 

Note that, because of the fewer laser diodes, the 148 Pro laser helmets do not offer as much coverage as their 272 Premier counterparts. As such, they are best suited for addressing minor hair loss or mild alopecia. 

The 272 Premier laser caps, on the other hand, are best suited for treating severe cases of hair loss or even baldness. This is because the laser helmet has a stronger output and also offers a greater coverage area. 

*Stretchable Headband

Besides the laser helmet, the laser system also comes with a stretch-fit headband. The headband is designed to secure the helmet to your head for maximum comfort.

And since it is stretchable, you will be pleased to know that it can fit most head shapes and sizes comfortably. Yeah, you heard that right! This is because according to the manufacturer, the headband can fit heads with a circumference of up to 23.5”. 

*Ball Cap

Additionally, when you order your laser cap system from Kiierr, you will also receive a plain black ball cap. This simple cap allows you to wear your laser cap anywhere.

The best part is that you can wear the cap with almost everything thanks to its plain black color. Besides, you can always use any standard ball cap of your choice if black is not your thing. 

*650nm Wavelength

The laser cap is designed to emit lasers in the form of wavelength. Generally, most laser helmets feature a wavelength of between 630 and 680 nanometers. 

With the Kiierr system, the laser helmet emits light at a 650nm wavelength to stimulate new hair growth. According to the manufacturer, this level of wavelength has been clinically shown to be most effective in regrowing hair. 

However, while this study suggests that LLLT may support hair growth, it does not provide any wavelength information. Therefore, so far, no studies are suggesting the optimum wavelength for stimulating hair growth. 

*Battery Pack

Last but not least, the system also comes with a rechargeable battery pack. And since the battery is rechargeable, it means you won’t have to worry about replacing it. As a result, it will save you a lot of money in the long run. 

As if that’s not enough, you also get a portable power pack, wall charger power plug, and USB cord for added convenience. Therefore, you can use the device anytime and from anywhere without worrying that it could run out of charge. 

How to Use the Kiierr Laser Cap

The cap is easy to use for anyone because there is no technical knowledge needed. However, before you can start using it, you need to make sure it is fully charged. Next, put the device on your head and turn it on by pressing the ON button. 

When done with the treatment, the cap will automatically turn itself off. Therefore, you don’t need to keep a watch or timer nearby to let you know when to turn off the device. This means you can relax, watch your favorite movie, read a book, or take a walk as the cap does its work. 

For the best hair growth results, the manufacturer recommends using this laser cap for just 30 minutes every day. And if you want to achieve maximum hair growth, you should use the device for at least six months. 

Additionally, according to Kiierr, you can safely use the cap with other hair growth solutions for the best results. 

What are other Users Saying About Kiierr Laser Cap? 

According to the different customer reviews that we found online; most users seem to agree that this device works. There are very few complaints. 

However, most of these reviews are on Kiierr’s official website. As such, it is difficult to tell if they are biased or not. 

It would have been better if there were customer reviews on independent websites like Amazon or even eBay. Unfortunately, this device is not even available for purchase on Amazon. 

Some of the positive reviews we came across from verified buyers include:

“The device seems to work. My wife says my hair is now looking thicker. However, the crown on my head is yet to grow any new hair.” – Robert T.

“After one year with Kiierr laser cap, I have considerably more hair. Before I was experiencing significant hair loss every time I would wash my hair.” – Linda H

“It’s been two months of using this device, and my hair has stopped falling out. The rest of the hair has also become healthier and thicker.” – Susan G. 

Now let’s look at some of the negative reviews about this product.

“The hat is too small and does not fit my head.” – Mark N. 

“I have been using the cap for 5 months, and I don’t see any change. I’m really disappointed.” – Eileen P.

Overall, the complaints are more about the laser cap being too small to fit. There are very few negative reviews about the device not working. 

Where to buy, Pricing, & Return Policy?

You can only buy the Kiierr Laser Cap on the company’s official website. This means the product is not available on other eCommerce platforms like Amazon. 

When it comes to pricing, the Kiierr 148 Pro Laser cap goes for $645. But if you choose to buy a complete system, the device costs $695. The Kiierr 272 Premier cap, on the other hand, costs $875 only and $955 for a complete system. 

Overall, the product is quite pricey compared to other similar products. However, because it contains significantly more laser diodes than other brands, the high price sort of makes sense. After all, devices with a similar number of diodes cost almost the same as the Kiierr cap. 

Moving on, you will be pleased to know that the manufacturer offers a 7-month money-back guarantee. Therefore, if you feel that this laser cap is not right for you, you can return it for a full refund. 


  • Backed by a 2-year manufacturer’s warranty
  • Has been cleared by FDA
  • Lightweight and portable design
  • Made with medical-grade laser diodes for maximum safety
  • Offers a hand-free solution to treat hair loss
  • Comfortable enough to wear every day for at least 30 minutes


  • Some users say that the cap is quite small to fit on their heads
  • Results may take up to 6 months to show up for some people 
  • It does not address all the underlying causes of hair loss like nutrient depletion

Final Verdict

So, is the Kiierr Laser Cap a good buy? Well, in our opinion it is because of the kind of technology it adopts. Like we have already mentioned, the cap uses low-level laser therapy which has been safely used for decades to treat ailments. Furthermore, some studies suggest this technology works for hair growth.

However, it is worth mentioning that results may vary from one individual to another. Also, the device may not work for everyone. But you don’t have to worry because the laser cap is backed by a 100% money-back guarantee. Find out more on their official website.

James Kerry

Hi, my name is James Kerry. My friends call me Hairy Jimbo. I'm a research assistant with an interest in hair-related topics. Facebook

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