Revian Red Hair Growth System Review vs Kiierr

Revian Red Hair Growth System vs. Kiierr

Let’s face it, hair loss sucks! It can be overwhelming dealing with hair loss while trying to find the right products to help your hair growth. Lucky for you, there are amazing hair loss products and technology available on the market today to help treat hair loss. These technologies can be utilized in the comfort of your own home and they are safe and effective! One of these treatment methods is known as low-level light therapy.

What is Low-Level Light Therapy (LLLT)?

Low-level light therapy (LLLT) is a scientifically proven technology that helps rejuvenate your hair follicles, giving them increased energy and blood flow. LLLT improves cellular respiration and stimulates your hair follicles, producing thicker and healthier hair.

Researchers at Massachusetts General Hospital measured how closely blood vessel growth and blood flow are correlated when it comes to hair growth. They found that increased blood flow to the scalp resulted in blood vessel growth, which in turn resulted in hair growth. The reason that they are correlated is because the larger your blood vessels are in your scalp, the more oxygen and nutrients are able to be delivered. When these properties are being delivered, your hair follicles are healthier, and are able to work better. A low-level light therapy cap naturally stimulated the hair follicles, increasing blood flow, and encouraging new growth to begin. 

Low-level light therapy is used for a number of health, wellness, and cosmetic treatments including treatments for hair loss, the healing of burns, the healing of scars, wrinkle reduction, and more. A number of hair loss prevention and/or restoration companies offer low-level light therapy treatments in the form of devices worn on the head to stimulate hair growth.

How Does Low-Level Light Therapy Work? 

Despite the fact that the skin is the organ that is most exposed to natural light, it still responds very effectively to red and near-infrared wavelengths. The way that this response works is that the photons in the low-level light are absorbed by mitochondrial chromophores in the skin cells. 

This stimulates the Electron Transport Chain reaction of the mitochondria inside cells to produce adenosine triphosphate(ATP), release byproducts such as nitric oxide which dilates blood vessels and promote blood flow, and release reactive oxygen species(ROS) which has a role in the immune system, thereby reducing inflammation. Also, diverse signaling pathways and stem cell-based tissue repair and healing are activated. 

The end result is that hair follicles are stimulated to produce more hair. The effectiveness of LLLT treatments for hair growth has been tested in many scientific studies. Studies such as this one, published by the National Institute of Health, prove that this technology works to generate hair growth and is safe to use. 

The hair loss industry has been booming with talk of laser therapy and its effectiveness on hair regrowth. There are many low-level laser light (LLLT) hair loss treatment companies on the market boasting great results with their products, and I am sure it can be a bit overwhelming. Many people who read these published results wonder “do laser helmets actually regrow hair?” 

Due to its effectiveness, and ease of use, LLLT is growing steadily in popularity in the hair loss prevention community. Many people are turning to it either to complement other hair restoration products, or to replace them entirely.

Evaluating the LLLT Product Options on the Market

Firstly, let’s talk about what laser caps are. Laser caps are medical devices designed for men and women looking to improve the overall health of their hair. They are head-worn devices that look like a baseball cap that promote hair growth and stimulate your scalp by using laser diodes. These caps have hundreds of laser diodes that are designed to target every possible angle of your scalp, in order to ensure the best results. The idea behind these caps is based on research that has been conducted that has found that the exposure to low-level laser light stimulates cellular activity. By exposing the scalp and hair follicles to a concentrated laser light, the cap is able to target and promote hair growth and health. 

There are several products on the market right now claiming to be the best at producing thicker, stronger, and healthier hair. But the truth is, some of these caps cannot keep up with others. Two popular LLLT companies are Kiierr and Revian. Below we will compare Kiierr vs. Revian Red Hair Growth System to give you some more information about these two popular LLLT products for hair growth. This article will reveal in-depth the pros and cons of each brand.


What is the Revian Red Hair Growth System?

All about Revian Red

Revian Red only has one laser hair growth cap. The Revian Red cap contains strictly LEDs and is priced at $1,495. These LED lights aim to enhance the restoration and revival of your hair follicles on your scalp. However, they are not the preferred light emittance method used in laser caps. Studies have shown that medical-grade laser diodes are more effective when looking to achieve new hair growth.

 LEDs are not as efficient for hair regrowth as medical-grade laser diodes. LEDs are incapable of producing coherent light waves. Additionally, they are significantly less powerful than laser diodes, and they distribute light more broadly, which results in a notable inability to effectively penetrate the scalp to the appropriate depth for cellular stimulation. Therefore, for the best possible hair growth results when doing laser treatment for hair loss, you should strongly consider using a laser cap with real medical-grade laser diodes.

Revian Red’s laser cap is for both men and women suffering from androgenetic alopecia, and is a one-size-fits-all. The Revian cap is FDA-cleared and clinically proven to help you fight your hair loss problems. This answers the question, “Does Revian Red work?” 

Revian Red enhances hair growth by targeting biochemical processes in your scalp with two colors of light. 620 and 660 nm wavelengths of light work together to unlock the body’s natural ability to accelerate healing and renew the cells that grow hair. The Revian hair cap can increase both the thickness and density of your hair follicles, resulting in thicker, fuller, and healthier hair.

The Revian Red hair cap is lightweight, flexible, and wireless. This allows you to complete your hair growth treatment conveniently, at a time and location that works best for you. The Revian Red laser cap should be worn every day for a 10-minute time period. You should be able to start seeing new hair growth results after several months of religious, continuous, daily use of the Revian Red system according to their website. They offer a 100% money-back guarantee if you don’t see results after using the product for at least 6-months.

  • Revian Red Hair Growth System: App Feature


Revian Red features a REQUIRED app for their customers. There is bluetooth connectivity that is designed to track your results throughout your treatment period.

One of the main downsides to this feature is not everyone is technologically savvy. If you do not know how to download and work the app, this product may not be for you. In addition, if you do not have a tablet, cell phone, iPad, etc., you will be unable to use this app.

Pros and Cons of Revian Red Hair Growth System 


  • The Revian Red system is FDA-cleared 
  • It has a one-size-fits-all cap 
  • It has LED lights which emit specific wavelengths of light that can stimulate hair growth with proper use 
  • It has an app that can make using it easier, and also make it easier to track your results over time 
  • Dermatologist Recommended
  • The Revian cap comes with a 6-month guarantee 


  • There is only one Revian Red cap option 
  • The Revian hair cap does not contain medical-grade laser diodes which are more effective than LEDs for stimulating hair growth 
  • Non-tech savvy users may have trouble using the app to use product
  • The $1,495 price point is expensive, especially considering that the cap does not use medical-grade laser diodes.  

What is the Kiierr Laser Cap?

Kiierr laser cap before & after photos

The Kiierr laser cap for hair loss is a hands-free, portable hair growth device that is FDA-cleared for effectiveness and safety. These caps are designed to use low-level light therapy to stimulate the blood flow in your scalp and decrease inflammation. By increasing blood flow in your scalp, the proper nutrients and oxygen levels can be transported to the scalp to help regrow strong, thick, and healthy hair follicles.

The Kiierr laser cap uses medical grade diodes. Red light therapy is emitted through laser diodes in laser caps to penetrate the scalp tissue and stimulate new and healthy growth in the hair follicles. Laser diodes are optoelectronic devices that convert electrical energy into light energy to produce a high-intensity coherent light. In short, they are much more productive and efficient than a regular laser would be. This therapy can also help reduce inflammation in the scalp, which provides a healthier base for the hair follicles to grow and prosper.

Laser therapy is one of the safest treatments to use for hair loss, as long as you select a reputable product like Kiierr, which is FDA-Cleared. It is important to note that in order for a product to be FDA-cleared, the FDA has to deem the product both safe and effective. No laser cap side effects have been identified in clinical testing. In addition, from both extensive testing and user experience, it is absolutely painless and easy to use. 

Because low-level laser light therapy involves the use of lasers, there have been extensive clinical trials to determine the safety and efficacy of this technology for hair loss treatments. Studies such as this one prove that LLLT is both effective and completely safe for hair loss treatment. During the clinical trials for this study, no laser hair cap side effects were observed in any of the hundreds of people who received the treatment. Additionally, clinical studies done on the Kiierr Laser cap showed a 93% success rate. 

Kiierr also gives you the bundle option, which comes with the laser cap,

Kiierr’s hair growth system is placed inside a Kiierr ball cap or you can use a standard ball cap of your choice. This makes the laser cap fashionable, discreet, and convenient. It should be worn every other day for a time frame of 30-minutes. All Kiierr caps are made with a built-in timer, so the laser cap will automatically shut itself off after the 30-minute period is over.

Unlike Revian Red, Kiierr offers three different laser caps to choose from. The differences between the three are the amount of laser diodes they contain, along with the size of the cap. One cap (148Pro) contains 148 laser diodes. The other two (272Premier and 272PremierMD) contain 272 laser diodes. The 148Pro and 272Premier are the same size. The Kiierr272PremierMD cap has a larger size option and offers a few other enhancements and features.

The prices of these laser caps range anywhere from $645-$1,545 depending on what cap you choose. The price also reflects whether you purchase the laser cap alone, or if you purchase the complete hair growth system,  which comes with their Kiierr hair growth gummy vitamins, shampoo, and conditioner.

Some of Kiierr’s customers see amazing results in as little as 3-months, but typically customers report noticeable hair growth results around the 4–6-month mark. Kiierr offers a 7-month Growth Guarantee if you don’t see results after using the product continuously for at least 7-months. Kiierr also offers safe, healthy, and effective additional hair growth supplements to help maximize and speed up your hair growth.

Pros and Cons of the Kiierr Laser Cap 


  • FDA-cleared 
  • Portable 
  • Discreet baseball cap design 
  • Three different laser cap options to choose from at different price points 
  • Built-in timer 
  • 93% success rate in clinical studies
  • All caps contain medical-grade laser diodes for optimal hair growth 
  • 7-month Growth Guarantee
  • Option to include hair growth supplements with the laser cap as a package 


  • Kiierr does not offer an app to help you track your progress while you use the product

Laser Cap Reviews

What is a laser cap for hair loss?

It is important to look at laser cap reviews before purchasing one. Reading Revian reviews and reviews for other laser caps will give you a pretty good idea about the success other customers have seen, as well as their thoughts on the products and technology. Kiierr has hundreds of 5-star laser cap reviews, allowing you to feel comfortable and excited when purchasing their products.

Going through this step will give you peace of mind that you will not get any laser hair growth side effects when you start using your LLLT product, as well as the confidence that you are purchasing a product that has been proven to work. If you are going to invest in a product like this, it is important that you do your research and make sure that you are investing in a product that has not only been proven to work, but that has also been recognized time and time again to be safe.

Comparing Kiierr vs. Revian Red Hair Growth System

Chart of Revian vs. Kiierr

These two products are similar in the fact that they both strive to regrow hair for both men and women effortlessly and they both provide free shipping on all purchases.

Kiierr contains strictly medical-grade laser diodes, while the Revian Red hair growth system contains only LEDs in their laser caps. Many hair growth companies will use LED lights in their products to make cheaper laser caps. While LED lights promote skin health and wound healing, the light being produced from these LEDs typically is not preferred for hair growth and does not have the same capabilities as real medical-grade laser diodes.

A big difference between Kiierr and the Revian Red hair system can be found in their guarantees and warranty. Kiierr offers a 7-month guarantee or your money back. Their warranty guarantees you a new unit, absolutely free, in case of any issues related to the laser cap. Revian Red offers a 6-month, 100% money back guarantee. In order to qualify for their warranty, users must be tracking their treatment via the Revian mobile app to prove that they have a minimum of 80% treatment compliance throughout their first 6 months. You must notify Revian about wanting to return the device by submitting a support ticket on the seventh month mark from the date that you started your first treatment. 

Conclusion: Revian Red Hair Growth System vs. Kiierr Laser Caps

Revian Red v. Kiierr laser cap

Kiierr and Revian Red are overall quite different in terms of products and technology. Kiierr uses medical-grade laser diodes in their caps to help promote healthy hair growth more effectively and efficiently, compared to Revian Red, which uses LED lights. Kiierr is also a discrete, portable cap, whereas with Revian, it must be plugged in. You can feel confident in your Kiierr purchase, knowing that you have a 7-month growth guarantee or money back. Kiierr also offers a free 2-year warranty to protect your product during that time period.

Based on this Kiierr vs. Revian Red review and real information that we have researched and uncovered; we can confidently presume that the Kiierr laser cap and Kiierr hair growth supplements are the best options. Kiierr’s safe, convenient, and portable laser caps can help you combat your hair loss in as little as 4-months. Start your hair growth journey with Kiierr today!

Kiierr vs. Revian FAQs

[sc_fs_multi_faq headline-0=”h2″ question-0=”Does Revian really work?” answer-0=”Revian Red is an FDA-cleared medical device used by men and women to combat hair loss on the scalp.” image-0=”” headline-1=”h2″ question-1=”Does LED light stimulate hair growth?” answer-1=”Medical grade laser diodes are preferred by medical professionals and scientists over LEDs due to clinically proven trials and results.” image-1=”” headline-2=”h2″ question-2=”Does red light therapy really work for hair growth?” answer-2=”Yes, red light therapy or low level light therapy is a clinically proven technology to be safe and effective to regrow the hair follicles on the scalps of men and women.” image-2=”” headline-3=”h2″ question-3=”What works better for hair loss, Revian Red or Kiierr laser caps?” answer-3=”We believe that Kiierr’s laser caps are superior to Revian Red because Kiierr’s products contain medical-grade laser diodes to stimulate hair growth.” image-3=”” count=”4″ html=”true” css_class=””]


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Are you looking for other laser cap company comparisons? Up next: Kiierr vs. Illumiflow.