Vielight Neuro Duo 4: Transcranial Intranasal Brain Helmet
- Calm and focus modes: Alpha 10 Hz and Gamma 40 Hz
- Calm and focus modes: Alpha 10 Hz and Gamma 40 Hz
- Covers the whole head, five 810 nm modules including a patented intranasal light
- High power without heat, LEDs engineered to stay cold
- Fits busy days, a full session takes 20 minutes
Switching between 10 Hz and 40 Hz per session
The Neuro Duo carries both fixed pulse rates, 10 Hz and 40 Hz, on a single unit, switchable per session. All five modules run the same 810 nm near-infrared, a band that passes through tissue more readily than visible light, with four against the scalp and one in the nasal channel across roughly 400 cm2. The two rates are hardware settings, not promises about matching any brain rhythm.
The pulse rates are design settings, not claims about brain activity; light supports normal cellular processes and does not treat, cure, or prevent any condition.
Three peer-reviewed studies. What they found.
Vielight's transcranial plus intranasal approach has been studied in independent, published research. The Duo includes both pulse rates used in these studies. Three studies, in brief:
- Scientific Reports, 2019. 20 healthy adults, single 20-minute session 810 nm light pulsed at 40 Hz, the Duo's gamma mode, measurably shifted brain activity on EEG compared with a sham session: alpha, beta and gamma power rose while delta and theta fell.
- Photobiomodulation, Photomedicine and Laser Surgery, 2019. 8 older adults, 12 weeks of home use Participants using the Neuro headset at 40 Hz at home three times a week showed increased cerebral blood flow and stronger connectivity within the brain's default mode network on MRI, alongside improved scores on standard cognitive assessments.
- Photomedicine and Laser Surgery, 2017. 5 older adults, 12 weeks The first published case series of the transcranial plus intranasal design used the 10 Hz alpha mode and reported improved cognition scores and better sleep, with no adverse effects.
Shared as context for how the technology was developed, not as a promise of results. General wellness device; not intended to diagnose, treat, cure or prevent any disease.
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Recommended pairing
Many people stack both: the Neuro Duo 4 aims 810nm light at the brain for focus and rest. The X-Plus 4 works a different pathway, a 633nm nasal applicator and 810nm thymus module for systemic and immune support.
Vielight Neuro Duo 4: Transcranial Intranasal Brain Helmet
$2,399.00
Vielight X-Plus 4: Intranasal Red Light Therapy Device
$449.00
Description
Included with purchase: six months of partial access to Vielight-AI, free with your Neuro 4.
The Vielight Neuro Duo 4 is Vielight's most complete brain photobiomodulation device, delivering gentle pulsed near infrared light to the brain through both a full transcranial helmet and a patented intranasal module. It gives you access to both Alpha and Gamma modes in a single device, so you can move between calm and focus depending on what you need.
Both modes, one device
- Gamma mode (40Hz) supports focus, information processing, memory, and brain energy. Best used in the morning or early afternoon.
- Alpha mode (10Hz) supports a relaxed resting state: mindfulness, learning, relaxation, and sleep. Ideal for the evening, before bed.
If you only want one of the pulse rates, the Neuro Alpha and Neuro Gamma are available separately. The Duo is for those who want both.
How it works
The Neuro 4 uses five strategically placed Vie-LED modules for full transcranial coverage, with the high powered 810nm light reaching across the wider cortex. A specialized intranasal module then sends light through the nasal channel to reach deeper structures the skull would otherwise block. This top and bottom synergy gives a comprehensive brain energy footprint that transcranial only devices cannot match, with the energy geometry focused on the Default Mode Network, the brain's central resting network.
Why 810nm
The Neuro uses 810nm because it offers superior penetration through tissue and bone. Head to head comparison research points to 810nm for the strongest tissue penetration and mitochondrial interaction, which is why Vielight built its technology around it.
Industry leading power, no heat
Vielight's patented Vie-LEDs produce among the highest power in the field (around 300 mW/cm² irradiance, roughly 5000mW total) for effective dosimetry, while the technology is engineered to stay cold, stimulating cells without thermal discomfort. The concave shaped modules part the hair for better contact.
Specifications
- Wavelength: 810nm near infrared
- Total power: ~5000mW (max potential), ~1000mW per module
- Irradiance: transcranial ~300 mW/cm², intranasal ~25 to 50 mW/cm²
- Estimated irradiance area: ~400cm² including the intranasal module
- Session length: 20 minutes
- Medical grade certification: ISO13485 and MDSAP
- Safety certification: TÜV Rheinland
What's in the box
One Neuro headset, one intranasal applicator, one charger, one pouch, and one carry case.
Using your Neuro Duo 4
Each session is 20 minutes. You can start with every other day and build up to six days a week. The general recommendation is daily use, alternating modes: Gamma earlier in the day, Alpha in the evening.
The research behind Vielight
Vielight is featured in the most published brain photobiomodulation studies globally, with over 35 published and ongoing clinical trials behind its technology. Research areas have spanned cognition, neuromodulation, and a range of neurological conditions. We share this as background on how the technology was developed, not as a promise of specific outcomes.
Contraindications and use
Vielight devices are well tolerated by most people. They are not recommended for anyone with active brain bleeds or a history of seizures. If you are pregnant, consult your healthcare provider before use. Some users notice mild, temporary effects such as a headache, dizziness, or slight discomfort, which generally subside as the body adjusts.
General wellness device. Not intended to diagnose, treat, or cure any disease.
Is this right for you?
You'll get the most from it if
- You cannot yet say whether calm or focus is the bigger need, and would rather not pick one.
- Your days vary, and you would rather switch modes than commit to a single one.
- Two sitting slots exist in your day; the two-mode routine assumes a daytime and an evening session.
- You would rather buy the full-featured model once than consider an upgrade later.
Maybe look elsewhere if
- You already know you will only ever use one mode; the single mode Neuro Alpha 4 or Neuro Gamma 4 covers it for $600 less.
Specifications
| Wavelength | 810 nm near-infrared (Vie-LED), used for both transcranial and intranasal modules |
|---|---|
| Pulse rate | 10 Hz (Alpha mode) and 40 Hz (Gamma mode); pulsed near-infrared |
| LED modules | Five Vie-LED modules: 3 rear transcranial, 1 frontal transcranial, 1 intranasal |
| LED power | 1000 mW per module (max potential); ~5000 mW total (max potential) |
| Power density | Rear transcranial LEDs 100-150 mW/cm2; frontal transcranial LED 75-125 mW/cm2; intranasal LED 25-50 mW/cm2 (page also cites ~300 mW/cm2 transcranial as a safety-limited potential) |
| Irradiance area | ~400 cm2 (+/- 50 cm2), including the intranasal module footprint |
| Targeted area | Full transcranial coverage with a focus on the Default Mode Network; modules are repositionable to target different networks |
| Session | 20 minutes per session, timer-controlled |
| Fit | Adjustable modular headset; concave Vie-LED lenses part the hair for direct scalp contact |
| Age suitability | Minimum age 5 years old, based on published study data |
| Power | Rechargeable; includes a charger (connector type not published) |
| In the box | 1 Neuro headset, 1 intranasal applicator, 1 charger, 1 pouch, 1 carry case |
| Certifications | ISO 13485 and MDSAP (medical grade); TUV Rheinland (safety) |
Wavelength and irradiance figures are conservative estimates based on lab spectroradiometer measurements; real-world output varies with distance and placement.
How to use
- Set upAdjust the modular headset for snug scalp contact (concave lenses part the hair), then insert the intranasal applicator into one nostril.
- SessionRun one timed 20-minute session; choose Gamma (40 Hz) for focus and mental energy, or Alpha (10 Hz) to relax in the evening.
- FrequencyVielight suggests starting every other day up to six days a week, working toward daily use: Gamma in the morning or early afternoon, Alpha at night before bed.
- CareClean and sterilize the intranasal applicator between uses, especially when sharing the device; recharge with the included charger.
- Good to knowVielight says do not use with active brain bleeds or a history of seizures, and pregnant users should consult a healthcare provider first. Some users may have mild, temporary effects such as headache, dizziness, or slight discomfort at the application site. Marketed as a general wellness device.
Shipping & delivery
Free shipping within the United States on every order. Most orders ship within a few business days, and you will receive tracking as soon as your order is on its way. Larger items may ship freight with a delivery appointment.
Warranty & returns
2-year warranty from the date of delivery.
Not the right fit? You have 60 days from delivery to send it back for a full refund. Reach out to our team, we will email you a prepaid return label and the right address, and refund you once it arrives. Items need to come back in their original packaging. Prefer to exchange it for something else? We handle that at no extra cost.
After the first 60 days, Vielight products carry a 6 month guarantee: use it for up to six months from purchase, and if it is not for you, return it for an 80% refund, even after use. Contact us and we will arrange the return for you.
Cancel free of charge any time before your order ships. If anything arrives damaged, send us photos of the item, the box and the SKU within 24 hours and we will sort it out for you.
See our Return Policy for full details.
Why it earns a place in the stack. Most longevity routines stop at the neck. The Neuro Duo 4 covers the brain, sending 810 nm light through a transcranial helmet and an intranasal module, with a 20-minute session that can lean calm or focus. If you want both Alpha and Gamma pulse rates without buying two devices, this is the one built for it.
Choose options
Compare the headsets
Alpha, Gamma, or both in one?
 Neuro Alpha 4
$1,799View |  Neuro Gamma 4
$1,799View | You are viewing Neuro Duo 4
$2,399Viewing | |
|---|---|---|---|
| Pulse | 10 Hz (alpha) | 40 Hz (gamma) | 10 Hz and 40 Hz, switchable |
| When people use it | At night, before bed | Morning or early afternoon | Either, chosen per session |
| Front LED output | 75 mW/cm² | 75 mW/cm² | 75 to 125 mW/cm² |
- Pulse
- 10 Hz (alpha)
- When people use it
- At night, before bed
- Front LED output
- 75 mW/cm²
- Pulse
- 40 Hz (gamma)
- When people use it
- Morning or early afternoon
- Front LED output
- 75 mW/cm²
- Pulse
- 10 Hz and 40 Hz, switchable
- When people use it
- Either, chosen per session
- Front LED output
- 75 to 125 mW/cm²
The Duo carries both pulse modes in one headset: $1,199 less than buying the Alpha and Gamma separately.
Choose Alpha or Gamma if you know which session time you want; choose the Duo to switch between them. All three use 810 nm near-infrared, five LED modules (four on the head, one intranasal) and timed 20-minute sessions.
Frequently Asked Questions
What is the difference between the Neuro Duo 4 and the Neuro Alpha 4 or Gamma 4?
How do you use the Vielight Neuro Duo 4 day to day?
Does the Neuro Duo 4 get hot during a session?
What is in the Neuro Duo 4 box, and how is it certified?
What is the return policy on the Vielight Neuro Duo 4?
Who should avoid the Vielight Neuro Duo 4?
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Our approach
Every product earns its place.
No single thing changes your biology on its own. What matters is the system, and whether each piece earns its place. Here is how a device makes it into Kove.
01
Start with the evidence
Where there is research behind how something works, we read it. We look at the real mechanism a device relies on, like the wavelength, the frequency, or the dose, and whether the evidence holds up. Substance comes before marketing, and we are honest about how strong that evidence is.
02
Separate mechanism from marketing
A claim is not a mechanism. We check a device's real output against its stated one: does the panel emit the 660 and 850nm it advertises, at the irradiance that makes those numbers matter? The marketing language gets set aside. The measurable spec is what we judge.
03
Verify build and dose
Even a good idea does nothing if the hardware is weak. We confirm the output is consistent, the dose is usable in a real daily routine, and the build holds up over years, because a device only helps if it lasts as long as the habit.
04
Held to one standard
What clears every step earns its place in the system, held to the same standard as everything else. That consistency is what you can count on.
