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The Science is Real
Red light therapy has real research behind it — and a lot of marketing that outruns that research. Here's what the studies found, what they didn't, and how to use light correctly once you understand the difference.
- Also called
- Photobiomodulation (PBM), low-level light therapy
- Wavelengths studied
- 630–850 nm red and near-infrared
- Best-supported uses
- Skin appearance, hair density, localized comfort
- What matters most
- Dose, distance, and controlling which bands you run
Mechanism
How light reaches a cell
Skin is more transparent to red and near-infrared light than you'd guess. That narrow band — roughly 650 to 1200 nm — passes through tissue better than any other part of the spectrum, because it sits between where blood absorbs light and where water does. Researchers call it the optical window.
Light enters tissue
Red wavelengths work at the surface, in skin and scalp. Near-infrared travels deeper, reaching muscle and connective tissue.
Mitochondria absorb it
An enzyme called cytochrome c oxidase part of your cell's energy machinery absorbs these specific wavelengths. It's the reason wavelength matters at all.
Cellular energy shifts
Absorption is associated with increased ATP production, nitric oxide release, and short-lived signaling molecules that influence how the cell behaves.
The cell responds
Downstream, studies have measured changes in collagen synthesis, local blood flow, and inflammatory markers. This takes repeated sessions, not one.
Wavelengths
Different numbers. Different jobs.
Wavelength determines how deep light travels and which research applies. Fusion covers the full range, and each band can have a different job — so the useful question isn't how many you have, it's knowing which one you're using and why. Here's what each does.
660
Visible redSurface
Where it works: The top layer or so of skin, and the hair follicle. This is the shallow end of the therapeutic range.
What's been studied: Most skin-appearance and hair-density research uses red light in this band. It's the most-studied wavelength range for anything cosmetic.
Worth knowing: One controlled trial found red-only light performed as well as a broader mixed spectrum for skin measures — a useful check against the idea that more wavelengths always means more benefit.
810
Near-infrared
Deep
Where it works: Past the skin into muscle and joint tissue. Invisible to your eye — you'll feel gentle warmth rather than see it.
What's been studied: Measured penetration peaks near 808 nm, which is why this wavelength dominates deep-tissue and muscle-recovery research. Dose-finding trials in athletes have used it specifically.
Worth knowing: In one athlete trial, a mid-range dose beat both lower and higher doses. Turning it up did not help.
850
Near-infrared
Deep
Where it works: The most common near-infrared wavelength in consumer panels. Reaches muscle, fascia, and joints.
What's been studied: Frequently paired with 660 nm in combination protocols. Body fat is relatively transparent to near-infrared, which is part of why it travels further than red.
Worth knowing: Depth also depends on skin tone, blood flow, and how much light actually reaches you — which comes back to distance.
1064
DeepNear-infrared
Where it works: The deep end of the optical window, just before water absorption starts limiting how far light can travel.
What's been studied: The published human research using LED delivery at this wavelength is thinner than for 660 or 850 nm. Most of what exists uses laser sources at close range.
Worth knowing: It appears on spec sheets as a premium headline feature. Treat it as a bonus rather than a reason to choose a panel.
415
Visible blue
Shallowest
Where it works: The shallowest wavelength in the therapeutic range. Blue is absorbed in the epidermis and upper dermis, reaching roughly a millimeter at most. It does not reach muscle, joints, or deep tissue, and no panel arrangement changes that.
What's been studied: Blue light is absorbed by porphyrins, compounds produced by bacteria that live on skin. That mechanism is why blue is studied for surface applications. The pooled clinical results, though, are thinner than the category's marketing suggests: a systematic review of 14 randomized trials covering 698 participants found most were small, ran under 12 weeks, and carried a high risk of bias, with no statistically significant difference in lesion counts versus comparators. Scott et al., Annals of Family Medicine, 2019 · PMID 31712293
Worth knowing: Devices that make treatment claims for skin conditions require FDA clearance under a specific classification. ONYX panels are general wellness products and hold no such clearance, so we make no treatment claims for blue light.
Before you use blue. Blue is the one wavelength here with a documented downside. Research shows visible blue light can generate oxidative stress in skin and induce pigmentation, and studies found the effect more pronounced and longer-lasting in deeper skin tones (Fitzpatrick IV–VI). If you have deeper skin tone, or you're working on pigmentation or melasma, leave the blue and green channel off — it's separate from red and near-infrared, so your sessions lose nothing. Wear the supplied eye protection whenever blue is running.
520
Visible green
Surface
Where it works: Slightly deeper than blue, still well short of anything below the skin's surface layers.
What's been studied: The most-cited green light research isn't about skin at all. Work associated with Harvard's Rami Burstein found that narrow-band green near 520 nm produced smaller signals in the visual pathway than white, blue, red, or amber light, and follow-on randomized trials have tested it for headache. That research delivers light through the eyes, from a lamp, in a dim room, over sessions lasting an hour or more. It is a different exposure than standing in front of a panel, and a panel cannot reproduce it. Randomized controlled trial, Brain Sciences, 2025 · PMID 41300216
Worth knowing: Green is sometimes marketed for pigmentation and skin tone. The evidence doesn't support that at the strength those claims imply, and the outcomes usually attributed to green are better supported for red and near-infrared, which reach the tissue involved.
Six wavelengths, used on purpose
Most panels give you a number on a box. Fusion gives you the full range — 480 to 1060 nm — and tells you what each band is actually for. Red and near-infrared do the heavy lifting: the deepest research base, and the reach to get to the tissue the outcomes depend on. Blue and green work at the surface, with narrower and shallower profiles.
And you control them separately. The red and near-infrared bands run independently, and blue and green sit on their own channel — so you can run a red-and-near-infrared session with the visible colors off entirely, or use them on their own. A panel that fires everything at once gives you one recipe. Fusion lets you build the session around what you're actually after — which is the difference between owning 8 wavelengths and using them.
The research
What the studies found
Three of the areas below are supported by repeated randomized trials and meta-analyses — the same standard of evidence used to evaluate medications. Two are promising but thinner. One is early, and we've labeled it that way. Every study is linked so you can read it yourself.
Skin appearance and collagen
Well studiedMultiple randomized, controlled human trials with measured outcomes — not just before-and-after photos. This is the most consistently supported area.
A randomized controlled trial of 136 participants using red light twice weekly for about 15 weeks measured improvements in skin complexion, surface roughness, and ultrasound-measured collagen density compared to untreated controls.
Wunsch & Matuschka, Photomedicine and Laser Surgery, 2014 · PMID 24286286
A split-face randomized trial found roughly a 30% reduction in periocular wrinkle volume after 10 sessions over four weeks. Hydration and elasticity measures did not change.
An earlier split-face study of 37 participants found significant improvement in periorbital wrinkles on blinded photographic assessment, with skin biopsies confirming increased collagen.
Hair density
Well studiedSeveral double-blind, sham-controlled trials — the strongest study design available — with consistent direction of effect.
A meta-analysis pooling 11 double-blind randomized trials found a significant increase in hair density versus sham devices, and noted that lower treatment frequency outperformed higher frequency.
Liu et al., systematic review & meta-analysis, 2019 · PMID 30706177
A 16-week multicenter, double-blind, sham-controlled trial of 60 participants using 655 nm reported an increase of roughly 42 hairs per cm² versus essentially no change in the control group, with no adverse events.
Localized joint and muscle discomfort
Well studiedLarge meta-analyses support benefit at specific doses — with an important asterisk we've included rather than hidden.
A meta-analysis of randomized placebo-controlled knee trials found reduced pain and disability, and identified specific effective dose ranges — evidence that dose, not power, drives the result.
A meta-analysis published in The Lancet reported reduced neck pain immediately after treatment and for up to 22 weeks afterward in chronic cases. A later re-analysis argued the acute-pain finding weakens under a different statistical model — a genuine open question.
Muscle recovery and performance
PromisingReal trials in real athletes, but protocols vary so much between studies that pooled conclusions carry less confidence.
In a randomized trial of 28 elite soccer athletes, a mid-range dose applied before exercise outperformed both lower and higher doses on muscle force and post-exercise soreness markers.
Randomized dose-response trial, Lasers in Medical Science, 2016 · PMID 27575834
A companion trial testing power levels found the lowest of three power settings produced the best results — one of the clearest demonstrations that stronger is not better.
Randomized trial, Photomedicine and Laser Surgery, 2017 · PMID 29099680
Skin healing and inflammatory markers
PromisingSupported in clinical settings, mostly using contact or close-range delivery rather than full-body panels at a distance.
A meta-analysis of 18 randomized trials covering 670 skin wounds found improved healing rates and reduced discomfort compared to untreated wounds.
Sleep, circadian rhythm, wellbeing
Early / unprovenYou'll see confident claims about this across the industry. We don't think the evidence supports them yet, so we're saying so.
The research that exists in this area uses forehead-mounted transcranial devices in small clinical samples — not full-body panels used at a distance. Findings are mixed, and the most rigorous subsets have not shown consistent effects.
We make no claims about mood, mental health, or sleep for ONYX panels. If a company tells you their panel does these things, ask which study used their device, at their wavelength, at their distance.
What that means for you in practice
Translating the research into plain expectations, without promising you anything. The skin trials that measured collagen and wrinkle change ran 10 to 15 weeks of twice-weekly sessions before the differences showed up on instruments. The hair trials ran 16 to 24 weeks. Localized joint and muscle work tends to be felt sooner, but still across weeks of repeated sessions rather than after one.
So the honest expectation is a season, not a fortnight — and regular short sessions beat occasional long ones, because dose is what the research tracked and consistency is what produced the numbers. If you want something that changes how you look or feel by next week, this is the wrong purchase. If you'll use it three or four times a week for a few months, you're using it the way the studies did.
About this research. The studies referenced above investigated photobiomodulation as a general method. They were conducted independently, using a range of devices, wavelengths, doses, and delivery distances — most of them not ONYX products. They describe what researchers have observed about light therapy as a modality. They are not claims about what an ONYX panel will do for you, and individual results vary.
These statements have not been evaluated by the U.S. Food & Drug Administration. ONYX panels are low-risk general wellness products and are not intended to diagnose, treat, cure, or prevent any disease. If you have a medical condition, talk to your doctor before beginning any new wellness routine.
Straight answers
What the evidence doesn't show
We'd rather you buy a panel understanding exactly what it is. Here's what an honest reading of the literature requires us to tell you.
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Most studies are small
Many of the trials above enrolled 20 to 60 people. Enough to detect an effect, not enough to be certain about its size.
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Protocols vary wildly
Wavelength, dose, distance, and frequency differ so much between studies that reviewers routinely flag it as the field's central weakness.
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Lasers aren't LED panels
A lot of foundational research used medical lasers applied at close range. Effects may not transfer cleanly to a panel across the room.
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Long-term data is thin
Most trials run weeks to months. Very few follow participants for years.
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Some claims have no support
Fat loss, body contouring, and systemic whole-body wellness claims are not supported by reliable evidence. We don't make them.
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Effects are cumulative
Nothing here works in one session. The trials that found results ran weeks to months of regular use. Consistency matters more than intensity.
Dose & distance
Dose. Distance. Time.
This is the part almost nobody explains — and the part that decides whether a session does anything at all.
Two numbers matter. Irradiance is how much light lands on you right now, measured in milliwatts per square centimeter. Dose is the total that accumulates over the session, in joules per square centimeter. Dose is what the research reports.
Which means session length isn't a preference. It's arithmetic:
Seconds = Dose ÷ Irradiance6 J/cm² at a measured 60 mW/cm² → 6 ÷ 0.06 = 100 seconds.
More is not better. Researchers describe a biphasic dose response: too little does nothing, a middle range produces the effect, and past that, benefit flattens or reverses. It's why the athlete trials found their lowest power setting and mid-range dose won. Doubling your session time is not doubling your result.
Distance changes everything. Light intensity falls off roughly with the square of distance. Step from 6 inches back to 12, and you're receiving about a quarter as much — meaning roughly four times the session length for the same dose. Any irradiance number without a stated distance is meaningless.
Why published numbers disagree. A solar power meter — the cheap tool most of the industry uses — reads roughly twice as high as a laboratory spectrometer, because it responds to a wider slice of the spectrum. When independent testers measured five of the most-marketed home panels with a calibrated spectrometer at a fixed 6 inches, every one came in well below its advertised figure. If a spec sheet doesn't name the instrument and the distance, treat the number as marketing.
| Panel | Irradiance | 3 J/cm² | 6 J/cm² | 10 J/cm² |
|---|---|---|---|---|
| Fusion Ultra | 58 mW/cm² | 51 s | 103 s | 172 s |
| Fusion Pro | 62 mW/cm² | 48 s | 96 s | 161 s |
| Fusion Solo | 50 mW/cm² | 60 s | 120 s | 200 s |
| ONYXred Omega | 94 mW/cm² | 31 s | 63 s | 106 s |
| ONYXred Spotlight | 529 mW/cm² | 5 s | 11 s | 18 s |
How we measure. Figures above are taken at a fixed distance of 6 inches using a spectrometer, averaged across the panel surface rather than reported at the single brightest point. We publish the method so you can compare us against anyone on equal terms.
Now pick the right panel
You know what the research supports and how dose works. Choosing hardware is the easy part from here.
Different wavelengths reach different depths.
Shorter wavelengths are absorbed near the surface. Longer ones pass through skin into muscle and connective tissue. That is why a panel with one wavelength can only do one job.
Illustrative. Actual penetration varies with skin tone, thickness, hydration, blood flow, and body site — published ranges differ by 20 to 50 percent. Melanin absorbs more blue and green light, so depth is generally reduced in darker skin.
Built to outperform the panels we used to buy.
Intuitive touchscreen
Adjust wavelengths, intensity, and session time instantly. No apps, no pairing, no hassle — everything at your fingertips.
The highest irradiance
20–60% higher power output than most panels on the market, for deeper absorption and faster results.
Shielded EMF
Zero EMF emitted in the therapy region — so your cells get light, and nothing else.
Pulsing & dimming
Customize every session as you explore the latest in light therapy and biohacking science.
What people tell us.
The new touch panel is so straightforward! The irradiance feels more refined. I love the program settings. My clients are going to LOVE these!
After dealing with chronic skin issues like psoriasis and skin cancer, I was so happy to find ONYX red light therapy. I’ve seen real improvement in scar healing, pigmentation, and overall inflammation. When I had shoulder surgery, I used my ONYX light during recovery and noticed faster pain relief, less swelling, and quicker scar healing—even my surgeon commented on how well I recovered. Living in the Pacific Northwest, I’ve also struggled with seasonal depression. Using the light for 10 minutes each morning gives me a natural mood and energy boost that lasts throughout the day. I’d recommend an ONYX red light to anyone. It’s versatile, easy to use, and you just sit back and relax in the healing light.
As an acupuncturist and owner of NE Wellness Center in Bismarck, ND, I’ve made ONYX red light therapy a key part of how I support people here. I chose ONYX to help unlock the body’s natural potential to heal and thrive. Clients often notice faster recovery, less soreness, and more energy—physically and energetically. It’s not just another tool. It’s something intentional, designed to honor how our bodies are meant to work
Individual experiences. Results vary by person, and consistency of use. These are customer accounts, not clinical outcomes.
Get the manual for your model.
Session guidelines, distance and timing, pulsing, smart modes, and safety information — written for the device you own.
Frequently asked.
What power source does it need?
The ONYX Fusion plugs into any standard 110–120V household outlet (US/Canada). Low energy consumption, no special electrical setup required.
What is your return policy?
Every ONYX product comes with a full 30-day trial starting the day you receive it. If it's not for you, return it in the original packaging (return shipping paid by you) — just keep your tracking info as proof of delivery.
How long does shipping take?
Your order ships within 2–4 business days, and transit typically takes 3–7 days depending on your location. You'll receive tracking as soon as your panel leaves our warehouse.
I entered the wrong shipping address. How do I fix it?
Email info@awakenforwellness.com within 2 hours of placing your order with your name, order number, and the correct address, and we'll get it updated before it ships.