The Laser Messiah II was a custom-built low-level laser therapy helmet created by John Christian, better known as OverMachoGrande. Unlike most commercial hair-growth helmets, each unit was assembled by hand using hundreds of individual 650nm laser diodes arranged for extensive scalp coverage.
In my opinion, the Laser Messiah II may be the best laser helmet ever made for hair loss. Its high optical power, quality AixiZ laser diodes, customizable coverage, and built-in brush bristles designed to lift the hair and help more light reach the scalp set it apart from most commercial devices.
Unfortunately, the current availability of pre-built Laser Messiah II helmets is unknown, although the DIY blueprints remain available. Reproducing the design may be impractical for most people because the original laser diodes have increased substantially in price, and assembling and wiring hundreds of components requires considerable time and technical skill.
Quick Answer
The Laser Messiah II was a customizable 650nm laser helmet built with approximately 250 to 450 laser diodes. Depending on the configuration, it produced approximately 1.2 to 2.1 watts of combined nominal optical power.
Its flexible construction, dense diode placement, diffused laser output, and integrated brush system were designed to deliver clinical grade laser power directly to areas of the scalp most affected by hair loss.
Although no device-specific clinical trial proves that it outperforms current FDA-cleared helmets, its high optical power, diode quality, coverage, and repairable construction make it one of the most technically impressive hair-growth helmets ever offered.
Laser Messiah II at a Glance
| Feature | Laser Messiah II |
|---|---|
| Creator | John Christian of OverMachoGrande.com |
| Technology | Low-level laser therapy |
| Wavelength | 650nm |
| Approximate output per diode | 4.75mW |
| Diode configurations | Approximately 250 to 450 |
| Optical power | Approximately 1.2 to 2.1 watts |
| Light delivery | Diffused laser output |
| Hair management | Built-in brush bristles |
| Fit | Flexible and adjustable |
| Customization | Diode placement based on areas of hair loss |
| Repairability | Individual diodes and connections could be serviced |
| Current availability | DIY, pre-built status unknown |
What Was the Laser Messiah II?
The Laser Messiah II grew out of the do-it-yourself laser helmet movement of the late 2000s. John Christian helped popularize full-coverage laser helmets as an alternative to handheld laser combs and commercial devices containing relatively small numbers of laser diodes.
The original Laser Messiah I was a design people could build using John’s free instructions. The Laser Messiah II was the more refined version that John assembled and wired for customers.
According to the original Laser Messiah II sales page, the helmet was fully customizable, upgradeable, and user-serviceable. Diode placement could be adjusted around the user’s pattern of hair loss, including the hairline, temples, crown, and areas of diffuse thinning.
What Made the Laser Messiah II Different?
The Laser Messiah II was built around five main design priorities:
- Use hundreds of real laser diodes to provide extensive direct coverage.
- Arrange the diodes to reduce large gaps and excessive overlap.
- Elevate the diodes above the scalp so the light could spread over a larger area.
- Diffuse the laser output instead of creating small, concentrated points of light.
- Maintain a reasonably consistent distance between the diodes and scalp.
Most modern hair-growth helmets prioritize portability, rechargeable batteries, compact styling, and simple mass production. The Laser Messiah II prioritized optical power, coverage, customization, and serviceability.
High Quality Laser Diodes
The helmet used 650nm laser diode modules. John’s preferred components were AixiZ 650nm, 5mW laser diodes, which were driven at approximately ~4.75mW per diode in the Laser Messiah II. While most hair-loss helmets advertise 5mW laser diodes, they rarely drive them at full power for the entire treatment session and may struggle to maintain consistent output because of inadequate heat-sinking materials.
Because laser diodes are heat-sensitive and can experience thermal droop, many hair-loss helmets skimp on heat sinking or use shorter treatment times to limit heat buildup and declining output. The Laser Messiah II is different: in my testing, it maintained near-full laser power throughout the entire 20-minute session with no measurable thermal droop.
Depending on the configuration, a helmet could contain approximately 250 to 450 individual laser diodes.
Estimated Combined Optical Power
| Diode Count | Optical Power |
|---|---|
| 250 | 1.19 watts |
| 300 | 1.43 watts |
| 366 | 1.74 watts |
| 400 | 1.90 watts |
| 450 | 2.14 watts |
These figures represent the approximate combined output across all laser diodes. They are not irradiance measurements at the scalp.
Actual scalp exposure would depend on the illuminated area, diode spacing, diffusion, treatment distance, hair interference, and normal differences between individual diodes.
Even with that qualification, approximately 1.2 to 2.1 watts of combined laser output is substantial for a wearable hair-loss device.
Extensive and Customizable Coverage
John developed several diode placement patterns for different types of hair loss. The objective was to minimize untreated gaps while avoiding unnecessary overlap between individual light footprints.
Higher diode counts could be distributed around the hairline, temples, crown, or areas of diffuse thinning. This made the Laser Messiah II more customizable than commercial helmets sold with a fixed diode arrangement.
Common Configuration Options
| Approximate Diode Count | Intended Coverage |
|---|---|
| 250 diodes | More targeted coverage |
| 300 diodes | General scalp coverage |
| 366 diodes | Expanded coverage |
| 400 diodes | Broad coverage |
| 450 diodes | Extensive coverage for diffuse thinning |
The exact layout was more important than the diode count alone. The modules needed to be positioned so their light footprints covered the intended treatment area without leaving large spaces between them.
Diffused Laser Output
The Laser Messiah II used modules with removable lens caps. Removing the caps allowed the laser light to spread across a larger area instead of producing small, concentrated points of light.
The diodes were also elevated approximately 2 centimeters above the scalp. This distance allowed each light footprint to expand before reaching the skin.
Together, diode diffusion, spacing, and elevation were intended to produce broader and more even coverage across the scalp.
This was part of John Christian’s design philosophy. It should not be interpreted as clinical proof that the Laser Messiah II produces better hair-growth results than every competing helmet.
The Built-In Hair Brush
One of the helmet’s most practical features was its integrated brush bristles. The bristles helped lift and separate the hair as the helmet was placed on the head, creating clearer paths between the laser diodes and the scalp.
Hair can block or scatter some of the light produced by a photobiomodulation device, particularly in people with longer or denser hair. Lifting the hair may allow more light to reach the scalp instead of being absorbed or reflected by the hair shafts.
The brush bristles served two purposes:
- They moved and separated the hair to help expose the scalp.
- They helped maintain the intended distance between the scalp and laser modules.
This was a practical solution to one of the biggest limitations of hair-growth light therapy devices: delivering light through the hair and onto the skin.
Flexible and Adjustable Construction
The Laser Messiah II did not fit like a conventional baseball cap. Its flexible structure was designed to conform to the wearer’s head while keeping the diodes at a reasonably consistent distance from the scalp.
The headband could be tightened, and the space between the headband and outer helmet could be adjusted. According to John’s fitting instructions, these adjustments allowed the helmet to accommodate different head shapes and sizes.
Maintaining a consistent distance matters because large variations could create uneven light delivery across different areas of the scalp.
Customizable and Repairable
The Laser Messiah II was designed to be upgraded and serviced instead of discarded when one component failed.
Individual diodes could be replaced, additional diodes could be installed, and worn power connections could be repaired. This serviceable construction was especially useful for a device containing hundreds of individual laser modules.
A failed diode or connector did not necessarily mean the entire helmet had to be replaced.
Laser Messiah II Pros and Cons
| Pros | Cons |
|---|---|
| Approximately 250 to 450 genuine 650nm laser diodes | Heavy, larger, and less polished than modern consumer helmets |
| Approximately 1.2 to 2.1 watts of combined nominal optical power | Requires an external power supply |
| Extensive and customizable scalp coverage | Contains hundreds of components that may eventually require service |
| Brush bristles help expose the scalp | Repairs require electrical knowledge |
| Diffused output covers a larger area | No device-specific clinical trials |
| Flexible and adjustable construction | Replacement diode costs have increased substantially |
| Individual diodes can be replaced | Building one requires considerable time and patience |
| Wiring and connectors can be serviced | No longer readily available as a completed product |
Why I Consider It One of the Best Hair-Loss Helmets
My opinion is based on the helmet’s engineering rather than device-specific clinical trials.
The combination of high optical power, quality laser diodes, dense customizable coverage, diffused output, and brush bristles that help expose the scalp is difficult to find in a modern consumer helmet.
The Laser Messiah II was not sleek, lightweight, or wireless. It was a specialized device designed around delivering laser light to as much of the scalp as possible.
These features do not guarantee better hair growth. Results from low-level light therapy vary, and the Laser Messiah II has not been clinically proven to outperform current FDA-cleared devices. However, from a hardware and coverage perspective, it remains one of the most ambitious hair-loss helmets I have encountered.
Why the Laser Messiah II Is No Longer Practical to Build
The Laser Messiah II required hundreds of quality laser diodes. According to archived pricing, AixiZ previously offered 500 diodes for approximately $1,325, or $2.65 per diode.
That bulk option appears to have disappeared around March 2023. The same AixiZ 650nm, 5mW diode is currently listed individually for $4.88. This represents an increase of approximately 84%.
Estimated Laser Diode Cost Increase
| Example | Former Bulk Cost | Current Listed Cost |
|---|---|---|
| Cost per diode | $2.65 | $4.88 |
| 250 diodes | $662.50 | $1,220 |
| 300 diodes | $795 | $1,464 |
| 366 diodes | $969.90 | $1,786.08 |
| 400 diodes | $1,060 | $1,952 |
| 450 diodes | $1,192.50 | $2,196 |
| 500 diodes | $1,325 | $2,440 |
These estimates cover the laser diodes alone. They do not include the helmet structure, brush bristles, wiring, power supply, connectors, tools, labor, testing, or replacement components.
For a 400 diode helmet, the current diode price adds nearly $900 to the original component cost. This makes producing another Laser Messiah II considerably less feasible for most customers and do-it-yourself builders.
Could Cheaper Laser Diodes Be Used?
Less expensive clone diodes may eventually provide an alternative, but they should not be assumed to perform identically to the original AixiZ modules.
Potential concerns include:
- Inconsistent forward voltage
- Uneven optical output
- Differences in beam diffusion
- Lower manufacturing consistency
- Reduced long-term reliability
With hundreds of diodes operating together, small variations between components could affect current sharing and overall performance.
It may be worth purchasing a small batch of replacement diodes and testing their voltage characteristics, optical output, beam pattern, and stability. A full helmet should not be built around an untested clone diode.
Image above shows the updated wire harness using WAGO 221 lever nuts and Amass XT60 power connector.
Repairs and Electrical Upgrades
My Laser Messiah II eventually developed problems around its main wire harness and power cable connections. I replaced the two primary red wire nuts leading to the SAE cable with WAGO 221 lever nuts. The WAGO power blocks clamp each wire individually, replacing the two chaotic wire nut bundles in the original design. Because the helmet operates at low voltage and high current, movement at the main power connection could create resistance, intermittent contact, and heat buildup if the power cable shifted during use.
I also replaced the main SAE power connectors with Amass XT60 pigtail connectors. The original SAE connectors are commonly used for motorcycle battery trickle chargers and other relatively light-duty 12-volt accessories, rather than a continuous, low-voltage, high-current load supplied by an AC-powered PSU. The XT60’s gold-plated contacts, larger contact area, secure polarized fit, and high-current design provide a more durable, lower-resistance connection that is better suited to this application.
The newly designed wire harness completely fixed the intermittent flickering, non-working or reduced laser power that affected my helmet. For reference, the helmet uses a Mean Well LRS-100-3.3 power supply, rated for 3.3 volts and up to 20 amps.
NOTE: These changes describe my personal repair and should not be treated as universal modification instructions. Anyone working with an exposed mains-powered supply should understand the electrical and fire risks or have the work performed by a qualified technician.
Tips for Better Hair-Loss Helmet Results
| Tip | What to Do | Why It Helps |
|---|---|---|
| Clean the scalp | Use a silicone shampoo brush to remove oil and buildup. | Helps more laser light reach the scalp. |
| Change your hair part | Comb hair left for one session and right for the next. | Exposes different areas of the scalp. |
| Keep hair shorter | Reduce long, overlapping strands when practical. | Limits hair from blocking the laser light. |
| Scoop on the helmet | Place it on from front to back instead of straight down. | Lifts hair and reduces crossed strands. |
| Check the diodes | Inspect them using certified laser safety glasses rated OD6+ and covers 650-680nm | Identifies weak or failed diodes. |
Laser safety: Never look directly into a laser diode. Eye protection must be certified, rated OD6+ at 650-680nm, and appropriate for the device’s power level.
Final Verdict
The Laser Messiah II represents a very different approach from today’s compact, mass-produced hair-growth helmets. It sacrificed portability and polished styling in favor of diode count, optical power, scalp coverage, customization, and repairability.
In my opinion, it may be the best laser helmet ever made for hair loss. That conclusion is based on its hardware and light-delivery design, not proof that it produces better clinical outcomes than every competing device.
Unfortunately, the loss of AixiZ bulk pricing and the complexity of assembling hundreds of laser diodes make another full build difficult to justify. Unless a reliable and affordable replacement diode can be identified, the Laser Messiah II may remain an exceptional device from an earlier era of do-it-yourself hair-loss technology
Laser Messiah II vs Typical LLLT Helmet
Just look at the difference in optical power vs commercially available cookie cutter hair loss helmet. Both of these devices use 5mW 650nm laser diodes but only the Laser Messiah is driving the diodes to clinical grade power at the scalp.
