








🔴 Unlock your hair’s future with laser precision—because your scalp deserves the best!
The EVO Laser Hair Growth Helmet LH40 harnesses 100% medical-grade laser technology, engineered in Silicon Valley and FDA-cleared for safe, effective hair regrowth. Featuring 40-80 premium laser diodes, it delivers full scalp coverage in a hands-free, ergonomic design. Developed by a former NASA scientist, this rechargeable helmet offers a professional-grade, easy-to-use solution that integrates seamlessly into your hair wellness routine, proven to stimulate thicker, stronger hair with consistent use.







| ASIN | B07K391B39 |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #109,862 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #21 in Hair Regrowth Devices |
| Customer Reviews | 4.2 4.2 out of 5 stars (601) |
| Is Discontinued By Manufacturer | No |
| Item model number | LH40 EVO |
| Manufacturer | Theradome |
| Product Dimensions | 11.61 x 7.87 x 5.12 inches; 1.48 Pounds |
| UPC | 748252727206 |
6**Y
Quality Product. Realistic Expectations... Consistant use has brought great results.
March 2018: Arrived on time, comes with sturdy carry case. Unit is well made. Easy to use, just charge the Li-ion battery and press the button to start. It talks to you, but it's not annoying, 'Ready for treatment, place on head', ...'Five minutes remaining', ...'Treatment No. 2 completed.' If you take it off your head during treatment the lights go out. With it back on the head the lights come back on, and she says, “Treatment resumed.” It shuts off after 20 minutes. Overall very good design. No discomfort. My wife is using it also. I plan to start with one treatment per day, five times a week, M to F. If any negative results, will reduce to three treatments a week, M-W-F. The instructions say to use it at least twice a week, and allow a full 24 hours between treatments. I expect to see some improvement in existing hair strength after two months, 50 treatments. I expect to see new hair re-growth after 12 months, 260 treatments. I am 58 years old, and get my hair cut about once every ten weeks,... so not much happening up there in one month. April 2018: I plan to update this review each month with progress, if any. May 2018 update: It's working. Using six days a week. After 42 treatments I see stronger hair, the wavyness is coming back, and small new hairs coming in. I have a small red birth mark on my upper forehead, my hair line was well above this mark,, now I see fine hair next to and in front of it again,... the birth mark is not moving up my head! The hair line is moving back down. Increased to 5 stars. February 2019 Update. We continue to achieve great results. More thicker stronger curlier hair. The hairs that come back are the same color and texture as before. For several years [from about age 54 to 57] I was going about ten weeks between haircuts. Last year I after I started using the Theadome red laser hemit I got my hair cut every six weeks. Now, after nearly a year of treatment, I get my hair cut every three weeks, as I did when I was in my thirties,, the computer at GreatClips is keeping track. The lady at GreatClips can easily see the difference and told me, “Just keep doing exactly whatever you are doing.” The customer service at Theradome is excellent. The company stands behind their products. Dec 2022 Update. Still going strong after 1017 treatments. The battery was easy to replace. We were traveling over seas for a while and when my wife, 74 years old, got back to her regular hair dresser she screamed, “Oh my goodness! Honey, where did you get all this hair?!” Nov 2023 Update. The battery charger finally quit. Everything is still working, but the helmet can’t charge the battery. Theradome sent me a replacement battery and power adapter for free; when that didn’t fix it they offered me a replacement helmet at a 25% discount and free extended warranty. Determined to make it work, I dug the little circuit board out of the end of the battery, bought a battery holder, battery charger, and several new 18650 rechargeable batteries from Batteries Plus. I twisted the wires together, plugged it back in, stuck the battery holder to the helmet with double-stick tape,… “Ready for Treatment, Place on Head.” It’s not pretty, but it works. About once a week, I need to pull out the battery and swap it with the one in the charger. The reason there are three wires for the battery is the over-temperature alarm; when you hear the helmet say, “Error, Temperature High,” I believe she’s referring to the battery. Some cheap Chinese batteries don’t have over-temperature protection, even though there are three wires, the battery is telling the helmet everything is Ok even when it’s getting close to thermal run-away. Always buy Theradome replacement batteries. You could save $20 on a cheap battery, but your helmet could catch fire. Lithium-Ion batteries can be very dangerous. For my external battery setup, the charger on my nightstand has over-temperature protection built in.
R**T
It really works!
I purchased this helmet roughly 5 years ago and have surpassed 900 treatments. The helmet has reduced my bald spot on the crown of my head by about half. My hair has thickened elsewhere. Also notable my hair now grows almost twice as fast. Last, the hair in the top of my head has no gray whereas my hair further down beyond the helmet coverage is gray. I've been very happy with the device. Had to purchase new battery around treatment 380. New battery is still going strong
M**A
A genie in the bottle
I am THRILLED that I made the decision back in 2023 to give this a try for my hair shedding and hair loss. The results speak for themselves. Its just so amazing to me how healthier my hair is and how that bald spot in the front of my head keeps getting smaller. When I look in the mirror and Momma Donna sees the results to date with my all new hair sprouts still growing and filling in I am so happy. Yes happy. It works remember nothing happens overnight just be consistent and patient . For me it’s like brushing my teeth. I do that everyday now I use my Theradome no difference. The best daily habit I have:) that and flossing of course:)
P**P
Don't Waste Your Money
I purchased this product in February of this year for over 1k. I was hoping for a change in my hair. No change. I used it as instructed. Still no change. Don't waste your money. To add, the thing did not work each time to set upon the head. Unfortunately, I waited too late to return it. It is not worth one star.
M**R
A Good Choice
I purchased Theradome in July 2025 and have definitely noticed an improvement. My shedding has decreased and I am seeing new hair growth. Also, they have excellent customer service and a great website that is loaded with valuable information.
T**C
Theradome PRO really works
I have been using the Theradome PRO for quite a while and absolutely love it. Hair shedding stopped almost immediately and regrowth became noticeable in about 6-8 weeks. It is so easy to use; just put on the helmet, press the button and wear it for 20 minutes twice a week. It tells you what session you’re up to and how much time you have left in the session. I highly recommend to anyone having hair thinning issues. My wife just started using it and she loves it too!
A**N
Good product and great Customer Service
Have had it since December 2019 and I think it helps...I've always had thin, fine hair, which gets worse as you age....great Customer Service with help in identifying why my unit stopped working recently. Stephanie was wonderful and patient in walking me through the possible issues....it's back working again and I'm back using it 3 -4 times a week after I wash my hair.
A**I
Theradome
Love this helmet, it really works!
M**5
Theardome customer service is excellent, I contacted them and they sent me a return label the very next day. They kept me informed throughout and were able to re set the device. I would highly recommend this product.
M**T
I’ve now been using this helmet 80 times- around 4 x a week. The difference is amazing. I had had extreme hair loss, but now there is very healthy new growth coming- about 2 inches long. I would highly recommend this product- it is an investment for new hair growth. Excellent product.
V**.
Ho iniziato a usarlo a dicembre, dopo quasi 6 mesi ho fatto un controllo in un centro tricologico per avere un riscontro che non fosse solo la mia osservazione allo specchio, ma un'analisi con la microcamera. I risultati ci sono: capelli più spessi e nuove ricrescite. Il tutto senza l'impiego di fialette o altri prodotti.
R**T
Ma femme l’adore!
D**I
After 4 months (39 uses) it stopped working Lazer error
Trustpilot
2 months ago
5 days ago