TheradomeEVO LH40 Laser Hair Growth Helmet

Name: Theradome EVO LH40 Laser Hair Growth Helmet
Brand: Theradome
SKU: THD-LH40-1003

5.7

Usability5.9Social5.6

15th of 30 we've scored in Laser Hair Growth Caps & Helmets

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5.9

SVT SCORESRead review

40-laser cordless helmet, 20 minutes four times a week; 510(k) K161046 names it, total output not published.

$695

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SKU: THD-LH40-1003 Category: Laser Hair Growth Caps & Helmets Brand: Theradome

Usability

Verification7.0

Wavelength Spec10.0

Coverage1.0

Build Quality5.0

Warranty & Support8.0

Ease of Use6.0

Usability Score

Half The Lasers, Twice The Sessions

The EVO LH40 is the PRO LH80's shell with 40 lasers instead of 80: Class 3R diodes at a stated 680 nm and 5 mW each, no LEDs, run cordless for 20 minutes four times a week. Its 510(k), K161046, is for the Laser Helmet LH40-EVO, and the device registry lists model EVO LH40 under it, so it scores 7 on verification. Theradome publishes no total output, and no output measurement has been published. Forty diodes put it at the bottom of the coverage scale. The $695 on theradome.com includes a 5-year DomeCare extended warranty over the standard one year, a hair-care bundle and an ebook; Amazon sells the helmet alone at $529.99, and Costco listed it at $399.99 in a September 2026 promotion. Amazon rates it 3.5 from 175 and Costco 3.8 from 3,481, a pool that includes promotion-collected reviews. At $695 it is $300 less than the PRO, which needs half the weekly sessions.

PROS

510(k) K161046 names the LH40-EVO
All 40 diodes are lasers, with wavelength, per-diode mW and Class 3R published
Cordless and hands-free, with voice prompts and automatic shut-off
5-year DomeCare warranty included on theradome.com
$300 less than the PRO LH80

CONS

Four 20-minute sessions a week, twice the PRO's
40 diodes, the fewest of any helmet listed here
No total output published or measured
Guarantee refunds keep a 25 percent fee and return shipping
$695 on theradome.com against $529.99 for the helmet alone on Amazon
364 J/cm2 per session claimed; the 510(k) gives 0.52 J/cm2

The EVO LH40 is a cordless helmet with 40 Class 3R laser diodes, which Theradome states run at 680 nm and 5 mW each, with no LEDs. Sessions are 20 minutes, four times a week, started with one button and ended by an automatic timer; a voice announces progress and warns of low battery, and sensors stop the lasers when the helmet is off the head. It uses the PRO LH80's vented plastic shell, measures 10.75 x 7.72 x 6.77 in and weighs 15 oz, and a replaceable lithium battery charges in about three hours. On theradome.com it ships with foam fitting pads, a storage bag, a charger, a 5-year DomeCare extended warranty, a hair-care bundle and an ebook.

Social Scores

Reddit Score6.0

Few Reddit threads name the EVO. In a June 2024 r/redlighttherapy thread, an owner who bought the EVO at a discount from Costco says in January 2025 that she is past 500 treatments at five nights a week and would buy the same unit again, and a September 2024 commenter there weighs the EVO at $400 at Costco against paying at least twice that for the PRO. In a February 2022 r/Costco thread (7 comments) about a $380 Costco purchase, a commenter says the helmet does not fall under Costco's 90-day electronics return window. The fit, pad and support complaints in the Theradome threads name the PRO and are not counted here.

Liked (1) · Complaints (1)

Liked

Would buy the same unit again after 500+ treatments, per one owner

Complaints

Outside Costco's 90-day electronics return limit, per one r/Costco commenter

Google ScoreProduct-line5.0

The written EVO reviews found are templated affiliate pages, one of which describes straps and an app the EVO does not have, so none is counted. For the line, rx-hairloss.com (August 2026, with Amazon links) notes that the EVO needs four 20-minute sessions a week against the PRO's two, and flags unpublished total output and the 25 percent refund fee; older UK blog trials of the PRO found the shared shell big until the foam pads were fitted.

YouTube Score6.0

Two owners who bought theirs at Costco have posted videos. Reviews & How Tos filmed an unboxing in February 2021 (5,163 views), paid $360 in a $100-off sale, says the series is not sponsored, and followed it with updates to 17 weeks (31,229 views). JohnnyK's April 2024 review after about two years (9,954 views, with an Amazon affiliate link) finds it comfortable, the rubber pegs no trouble and the replaceable battery trouble-free, but charging slow, and calls it expensive for what it does.

Liked (2) · Complaints (2)

Liked

Comfortable, pegs no trouble (JohnnyK)
Replaceable battery, trouble-free over two years (JohnnyK)

Complaints

Slow charging (JohnnyK)
Expensive for what it does (JohnnyK)

Amazon Score5.0

The EVO's Amazon US listing, sold by the Theradome Official Store at $529.99 without the extras theradome.com adds, holds 3.5 from 175 ratings, split 51 percent five-star against 25 percent one-star. Quality is tagged 11 times, all positive, and ease of use 8 times, 7 positive, while battery life is tagged 7 times, all negative, and value for money 10 times, 8 negative.

Liked (2) · Complaints (2)

Liked

Quality, tagged 11 times, all positive
Ease of use, tagged 8 times, 7 positive

Complaints

Battery life, tagged 7 times, all negative
Value for money, tagged 10 times, 8 negative

User Review Score6.0

Costco's EVO listing holds 3.8 from 3,481 reviews when read in September 2026, 1,779 five-star against 523 one-star, and 1,428 of the 1,850 reviewers who answered would recommend it. None of the file is syndicated from Theradome, but an October 2020 reviewer says Theradome emailed an offer of free biotin gummies for a positive Costco review. It was $399.99 after a $130 member discount through September 2026. In the 100 most recent reviews, May to September 2026, 22 call it easy to use and five light or comfortable, and two praise Theradome's help with charging, while 10 report a unit that failed, threw errors or arrived broken and six fault the micro-USB port or a short charge. Five reviewers since October 2023 say their unit arrived scratched or looking used.

Liked (3) · Complaints (3)

Liked

Easy to use, in 22 of the 100 most recent reviews
Light and comfortable, per five recent reviewers
Helpful Theradome support on charging, per two recent reviewers

Complaints

Failed, threw errors or arrived broken, in 10 of the 100 most recent reviews
Micro-USB port or short charge, per six recent reviewers
Arrived scratched or looking used, per five reviewers since October 2023

Social Score

Brand-level

Trustpilot rates theradome.com 4.7 from 619 reviews (TrustScore 4.5), and notes that Theradome has not invited reviews recently and has not replied to negative ones. Theradome, Inc. of Pleasanton, California, is not BBB accredited and is rated A+, with 37 complaints in three years, including complaints over the 25 percent fee kept on guarantee returns and over out-of-warranty repairs. The 4.7 from 6,395 shown on theradome.com is a file Theradome collects itself, and no pool below counts it.

Additional information

Specification: Theradome EVO LH40 Laser Hair Growth Helmet

Red Light Therapy Specifications

Device Type	Hair helmet
Wavelengths	Red (620-680 nm)
Irradiance Claimed	Not published
Irradiance Measured	Not measured
FDA Status	510(k) cleared
Safety Listing	IEC 60825 class stated
Power Source	Battery
Session Length	11-20 min

General Specifications

Warranty	5 Years
Dimensions	10.75 x 7.72 x 6.77 in
Weight	15 oz

Researched and edited by Michael Ambrose · Unbroken Ads LLC · How we score

TheradomeEVO LH40 Laser Hair Growth Helmet

Usability

Usability

Social Scores

Additional information

Specification: Theradome EVO LH40 Laser Hair Growth Helmet

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TheradomeEVO LH40 Laser Hair Growth Helmet

Usability

Social Scores

Specification: Theradome EVO LH40 Laser Hair Growth Helmet

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