Kiierr Laser Cap Review | Can It Really Stop Hair Loss?

If you struggle with hair fall or thinning, you might often find yourself researching hair products that can help you regrow hair.

While various devices are available that promise new hair growth, one that seems to be gaining popularity is the new Kiierr Laser Cap.

Want to buy this much-hyped hair growth system but unsure if it is worth the money? We’ve got you covered.

In this Kiierr Laser Cap review, we will look at its features, pros, and cons, what sets it apart from similar hair growth products on the market, and how it can help reverse hair loss.

Kiierr Laser Cap Reviews

but first, let’s explore LLLT’s use for hair growth.

What is Low-Level Laser Therapy for hair?

Low-level laser therapy, aka LLLT for hair, involves low-powered, wavelength-tuned laser light absorbed by the follicle, stimulating the scalp and skin to the same degree as a natural sunburn.

Sometimes, you don’t even feel the light on your skin.

Low-level lasers are exceptionally safe, non-invasive, and cleared by the FDA to treat a range of medical conditions. They are especially effective in treating androgenetic alopecia.

While the laser is so low-powered that it doesn’t have much effect on the hair itself, it has an immediate, positive impact on the body’s reaction to hair growth and can induce hair to grow naturally in thinning areas of hair and scalp.

Laser hair growth caps are one way of receiving LLLT for hair growth, and they are less invasive than hair transplant surgery.

The laser cap from Kiierr can help you perform laser therapy on your hair yourself if you’ve been considering it.

The science behind it

Kiierr laser cap system uses low-level laser light therapy (LLLT) to safely penetrate scalp tissue through medical-grade laser diodes. Blood flow in the scalp stimulates follicles to produce hair, delivering nutrients and oxygen to the hair follicles, reducing inflammation, and ultimately promoting healthy hair growth.

By energizing the cells, new hair can grow stronger and thicker than ever!

This procedure can take up to six months, but you’ll start seeing new hair strands after 6-8 weeks.

Usually, it takes four to eight weeks for the laser cap to start working. Studies have found that almost half of the participants who had used a previous laser treatment and trichology treatment saw better results with the lasers.

If you don’t want to wear a wig, laser hats are perfect.

About the brand

Kiierr is a pioneer in the development and application of hair growth lasers.

Founded by Mike and Jolene Anderson in 2018, Kiierr is a husband-and-wife team. Due to Mike’s personal experience with losing his hair, they were driven to heal others through low-level light therapy (LLLT). As someone who has been helped by LLLT, they want to share their story with other people. That’s why they founded Kiierr: they truly care about the customers.

The laser cap aims to restore hair growth by targeting hair loss-causing follicles in the scalp.

A number of experts recommend the Kiierr Laser Cap as a treatment for treating hair loss, and FDA approves it. With this device, people suffering from hair loss issues have been able to increase their hair count and grow a full head of hair.

A non-invasive, painless therapy, Kiierr works remarkably fast, delivering significant results as quickly as possible.

Most patients undergoing treatment for hair loss and baldness have given positive feedback: they love the Kiierr laser cap. However, the Kiierr laser cap’s effectiveness before and after use is controversial, and many are skeptical. Even so, the effectiveness is scientifically proven.

What’s included in the Kiierr Laser Hair Growth System?

Let’s take a look at what this hair growth system kit includes.

Kiierr Laser Cap Reviews
  • USB Cord
  • 148 or 272 Diode Laser Helmet
  • Wall Charger Power Plug
  • Plain Black Ball Cap
  • Stretch Fit Headband
  • Portable Power Pack
  • User Manual & FAQ’s Guide

Here’s our review of this device so you can get a better feel for it.

Review of Kiierr Laser Cap

Kiierr offers two models: the 148 Pro and the 272 Premier. The models are similar, boasting a similar design, advanced laser technology, convenient features, flexibility, and operating modes.

Compared to the Kiierr148Pro Laser Cap, which contains 148 laser diodes, the Kiierr272Premier Laser Cap has as many as 272 laser diodes. As a result, the Kiierr148Pro will offer narrower coverage than the Kiierr272Premier.

Because of fewer lasers than its counterpart, Kiierr148Pro would be more suitable for treating mild alopecia, new hair loss, or minor hair loss.

With many lasers, the Kiierr272 Premier Laser Cap provides a greater coverage area for more severe hair loss and baldness cases. Moreover, the stronger output of this model also provides a faster treatment effect.

The Kiierr272Premier, however, costs nearly twice as much as the Kiierr148Pro Laser Cap. The KIIERR148Pro is a bargain for people who wish to receive laser treatment in the comfort of their own homes. However, it does not cover enough hair to treat baldness.

To treat severe hair loss, we recommend the Kiierr272Premier Complete System, which along with the cap, includes a hair vitamin, shampoo, and conditioner to help make the treatment even more effective.

Recently, Kiierr launched Kiierr 272 Premier MD Laser Hair Cap and Kiierr 272 Premier MD-XL to fit larger head sizes. With the refined design, Kiierr made the caps 25% bigger, wider, and deeper to target the sides and back of the scalp, so they should fit more head sizes up to 24.5″. As a bonus, the battery is upgraded, offering three extra treatments per charge. The original form is kept, so it’s still lightweight and portable. For added safety, the cap shuts itself off if it falls off your head.

kiierr laser hair growth cap

Plain black, the cap is easy to wear because it looks like a regular cap. Lightweight, the cap measures 23.5 inches in circumference, so it fits most heads. The cap has a small rubber cushion to protect it when not in use, and its design makes it easy to wear and take off.

With the automatic shut-off timer built in, the cap automatically shuts down after 30 minutes.

Unlike most caps, the Kiierr Cap contains no plastic, which is a real plus. The built is fully metal and quite sturdy.

The Kiierr laser cap for hair growth distributes heat evenly throughout the hair shaft.

About 300-350°F is the ideal temperature for this cap. Moreover, it is non-invasive and painless, so there is no burning.

When you use the Kiierr laser cap for the first time, you will lose more hair than usual. If it happens, you shouldn’t stop using it immediately since it’s quite normal— the laser light will quickly remove the hair that falls out to make way for new hair.

kiierr laser cap reviews

Wear the cap for 30 minutes every other day doing your thing, and you’ll begin to see results within a few weeks.

Furthermore, you can use it on its own or with other treatments such as Minoxidil, hair serums, and hair growth supplements.

There is a 93% success rate for this product in clinical studies, proving that it works both for men and women.

For any issue with the device, contact Kiierr right away. The website offers a chatbox and a hotline, which is very convenient. The staff will always try to assist you in the best possible way to solve the problem. Also, Kiierr’s laser hats come with a 2-year warranty.

If unsatisfied, you can simply return it with their no-questions-asked money-back guarantee if you cannot see any noticeable results within seven months.

Shop Kiierr Laser Hair Cap Now


  • FDA clearance
  • Boosts existing hair strength
  • Provides a healthy environment for hair growth.
  • XL variant available for larger head sizes
  • Keeps your hair healthy, shinier, and softer by preventing damage.
  • Easy to put on and off
  • 100% hands-free and portable
  • Faster, easier, and more convenient than other forms of treatment.
  • Comes with a 2-year warranty.
  • You can ask for a full refund if there are no results after seven months.
  • Friendly and helpful customer service.


  • Results take some time to show.
  • May not work for all types of hair loss.

Is Kiierr Laser Cap FDA approved?

Before purchasing any medical device, always check for FDA clearance. Kiierr Laser Cap is FDA-approved. Find out more about their FDA clearance here.

The simplest and least expensive laser device on the market, it is familiar to most doctors and hospitals.

A well-known and widely used hair regrowth device, it is considered safe enough for most people’s needs.

As of yet, Kiierr laser cap has no reported adverse effects.

Who is a Good Candidate for the Kiierr LLLT Device?

There are certain factors to consider when determining who should consider Kiiierr. This therapy is beneficial to all genders and anyone from the age of 18 to 80.

Low-level laser therapy (LLLT) is ideal for:

  • Patients with hormonal and genetic hair loss (androgenetic alopecia) or pattern hair loss.
  • Those at the beginning stages of losing hair – between 1 and 7 years.
  • Men with general hair thinning, including the back and sides.
  • Women who find more hair on their brushes than usual.

Meanwhile, laser hair caps are not recommended for the following people:

  • Those with light sensitivity
  • Cancer patients in active treatment.
  • Sensitive skin, especially in older adults.
  • Those experiencing advanced hair loss
  • Those who are entirely bald

Before using the laser treatment, you must have a clean and healthy scalp.

How to Use Kiierr Laser Cap?

Step 1: Unbox and connect the charger to the power pack. Use only the portable power pack included in the kit and never directly into an outlet. Charge it completely in advance.

Step 2: Place the cap module into the ball cap. Fit the Kiierr Laser Hair module into the black ball cap provided or any standard ball cap of your choice.

Step 3. Connect the USB power adapter and the laser hair cap module. Make sure the USB cable is fully plugged into the cap. Do not attempt to connect the USB by force as it may be upside down.

Step 4: Switch on the cap once you’ve placed it on your head. When it is on, the device will blink and then turn itself off after 30 minutes. Make sure not to look directly at the lasers.

Depending on the severity of your hair loss, you should use this cap for a minimum of six months every day.

How long does it take to work?

Using laser caps may not give immediate results overnight or after a few days. Taking care of your hair from the inside out takes time, so you won’t get it done right away.

While not all clients find the same level of success with their cap treatments, the average is about one treatment a month.

It may take longer to get the same results when you have damaged hair, redness, white spots, or thin hair.

Treatment with Kiierr’s cap should last between four and twelve months, every other day. After that period, you can maintain the hair’s quality by continuing sessions once or twice a week.

We have found that the Kiierr Laser Cap price is affordable, and it is an excellent device for people with hair growth cycles that are too quick.

As a result, it is ideal for keeping unwanted hairs from growing or improving hair regrowth.

Is it safe? What about the side effects?

A low-level laser light, 560nm, is used by Kiierr which poses no harm to your skin and scalp.

At this point, no side effects have been reported, but you should take care when using lasers around your eyes. Don’t turn the cap on until you wear it.

Where to buy Kiierr Laser Cap?

Kiierr Laser Cap for sale is available on its official website. You can purchase it here.

The return policy

The return policy is always an option if you are not satisfied with the product’s results.

If you feel that this is not the right product for you, there is a 7-month money-back guarantee.

FAQs on Kiierr Laser Cap

1. Can both men and women use it?

Yes, the cap has a unisex pattern, so anyone can wear it.

2. What is the warranty on purchase?

There is a 2-year warranty on the product to ensure you are covered in case of a defect.

3. Is it compatible with other hair loss treatments?

Yes, you can use the Kiierr Laser Hair Growth Cap with hair treatments such as Minoxidil and other hair treatments.

4. How long do laser sessions last?

For effective treatment, the sessions can last up to 30 minutes each day.

5. Is there a rechargeable battery or a cordless option?

Since the battery is rechargeable, you won’t have to worry about replacing it.

6. How often should one use it per week?

Using the cap once or twice a week will provide steady results.

7. Can other family members use it?

Yes, you can share your cap with family and friends. Certain dandruff or residue from one’s head can, however, spread via the cap if different people use it.

8. Is Kiierr laser cap legit?

Clinical trials report a 93% success rate for the brand’s hair regrowth laser technology. Kiierr laser cap’s side effects are relatively rare, so the overwhelming number of positive reviews leads us to believe the company is legitimate.

9. Who manufactures the Kiierr cap?

The Kiierr laser cap is made by a firm located in Utah, USA. They claim that all of their hair growth products and hair loss solutions have FDA and meet strict ISO manufacturing standards.

The bottom line

So there you have it, the honest Kiierr Laser Cap review.

From the price to its pros and cons, we have covered all aspects of this laser hair growth device.

Notably, the Kiierr is the only effective laser cap for those in the early stages of hair loss. Like other hair treatments, the results may vary from person to person and may or may not work for everyone.

Combined with other hair treatments and a hair-healthy diet, the Kiierr treatment delivers impressive results.

If you’re unsure, you can read the customer reviews from those who have purchased the Kiierr cap on their review page. Take the time to read all of the product details carefully before deciding whether or not it is right for you.

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