Kiierr vs Theradome Hair Growth Helmet

Baldness is the problem that almost every person is fighting with. But thanks to science, this problem is not permanent. Several treatments are available for this widespread problem, such as medications or hair transplant surgery.  But surgery is an expensive option. 

So what to do if medication alone is not working? Well, the good thing is you can go for Laser therapy. Due to the increasing demand for Laser caps, several companies are now making such caps. It is a very tough job to decide which cap will give you the best result.

To help you in this, we have compared two popular laser cap companies, i.e., Kiierr and Theradome. After reading this, you will be able to decide which one is better.

Comparing Theradome with Kiierr Laser Hair Growth Cap

 Kiierr  Theradome
Duration of therapy30 minutes every other day.20 minutes twice a week/ once a day
Treatments30 minute treatment sessions20 minute treatment sessions
SizesTwo different sizes, average and bigger than averageOnly one size, i.e. “Size fits for all”
ProductsMore number of diodes with attractive ball cap designLess number of diodes with helmet cap design 
Guarantees and warranties2-year warranty. And 7-month money-back guarantee 5-year warranty and 6-month money-back guarantee

Both Kiierr and Theradome make use of Laser diodes instead of the LED light. LED light is cheaper but not recommended. The diodes used in caps of both companies are of medical grade. 

As laser caps are a medical treatment in which lasers are used, lasers in any device require FDA clearance. Similarly, companies have to follow all the rules specified by the Food and Drug Administration (FDA) of the U.S.A. and the Centre for Devices and Radiological Health (CDRH). It is necessary to get an FDA clearance for making such devices. Both caps are similar in this manner that both are FDA cleared. 

The basic principle used in both laser caps is also similar. Both work on Low-level-laser therapy for treating baldness. Men and women, both can use. 

Although there are some basic similarities in both caps, there are also differences between both. Below we have mentioned the differences. They both differ in various aspects such as prices, sizes, warranties, guarantees, etc. To make it easy for you, we have compared each aspect of both companies and mentioned a winner accordingly. 

Warranty Comparison

Kiierr provides a 7-month money-back guarantee and 2-year warranty.  They give a 210 growth guarantee. For using this guarantee, it is necessary to use the cap for 210 days. They also demand proof in the form of a short clip or a picture before and after using their product for claiming a guarantee. 

They also offer a warranty against defects and failure of devices. But they need a picture or a short clip regarding the issue. In case your return gets approved, you will be charged a restocking fee. 

Theradome provides a 6-month money-back guarantee and a 1-year warranty.

You automatically get registered when you buy a Theradome laser cap. There is no need to register for Theradome warranty when you buy it directly from their official website. But if you buy it from an authorized seller, you have to get registration for a warranty. 

They give a warranty for the defect or the failure of the cap, not for the misuse or accidental damage. 

Differences in Sizes

The Theradome laser caps came in only one that ‘Fits all’. 

The Kiierr laser caps came in two different sizes. One is the average size that fits all, and the other is 25% bigger than the average size.

Product Differences

Theradome has two different caps. One is pro with 80 medical-grade laser diodes, and the other is Evo with 40 laser diodes. The design of this cap is more like a helmet. It is awkward to go somewhere while wearing it.

Kiierr also has two different caps. One is with 148 laser diodes, and the other is with 272 laser diodes. The design of this cap is attractive. You can wear it wherever you want to, just like a cool ball cap. In addition, it came with many additional items, such as a cap holding case and biotin gummies for hair growth, conditioner, shampoo, etc.

Differences in Return Approaches

Kiierr provides a return policy of 7 days. No matter what the reason is, you can return the cap within seven days. Provided the cap is unused and is in original condition. You have to pay a small restocking fee in such cases. 

Theradome provides a return policy of 30 days. You can return the laser cap within 30 days of receipt. But the cap should be unused and in its original condition. You have to pay the cost of return postage. If the cap has a technical issue, this cost will be funded. 

Usage Comparison


1st Step: Unwrap & attach the power pack with the charger.

Get the new Kiierr laser cap device. Charge the device fully by connecting the charger with the power pack and plugging it into any outlet. For the best result, you should charge it fully.  

2nd Step: Put the Kiierr Laser Hair Cap unit within the provided or any selected ball cap.

3rd Step: Attach the USB to the Kiierr Laser Hair Cap unit and the power pack.

Once the power pack gets charged fully, attach the USB to the Kiierr laser cap unit, you put within the ball cap. And also to the power pack. Ensure that the USB port is attached entirely to the cap. Do not attach a USB forcefully, as you may hold it topside down.  

4th Step: Put the Kiierr Laser Hair Cap unit on your head. To activate the device, press the on button. (When the device is activated, the light will blink and will turn off automatically after 30 minutes).


  • Charged the helmet completely.
  • Place the foam pads.
  • Make sure you have a clean scalp and hair.
  • Voice guides treatments will be played by pressing the master switch.
  • Adjust the volume by double-clicking the master switch
  • Once the treatment is completed, Theradome cap will get turned off automatically after 20 minutes
  • Put the cap back into the case safely by the guidance provided by a voice note.

The working of both is almost the same; there is not much difference. 

How do they work?


  • Trigger Skin Tissue- The cap triggers the skin tissue by emitting low-level lasers on the scalp. Due to this, there is increased blood circulation to the scalp tissue. It is to decrease the inflammation and to start circulating throughout the head. Due to the blood circulation, essential nutrients and oxygen is transported to the hair follicles. It then causes the revival in such areas of hair that have issues (thinning).  
  • Protein Synthesis and Cell Absorption- The light is absorbed by the weak cells on the scalp when the light energy enters the skin. This results in rejuvenation of the scalp, and the growth of new hair starts.
  • Regeneration of Hair Follicle Cells- After the renewal of the hair follicle cells, hairs are carried back to life from the inactive (telogen) phase of the hair growth into the active growth (anagen) stage.


  • Only laser light can penetrate the scalp to reach the base of a hair follicle at a depth of 3-5nm. 
  • Theradome laser caps use cold lasers to penetrate the scalp and stimulate the mitochondria of the hair cells. 
  • The mitochondria then generate cell power that is dominated by hair follicles.

Duration of Therapy

Theradome laser hair helmets have a duration of treatment of about 20 minutes. The recommendation is to use this helmet for 20 minutes twice a week. You can also use it frequently if you want to, but don’t use it more than once a day.

The treatment duration of Kiierr laser caps is about 30 minutes per session. This is the ideal treatment duration to guide our beating laser diodes. It is not suggested to use it for more than 30 minutes a day. As your scalp needs a rest, treatment should be done every other day.