Most LED masks that advertise "near-infrared" use a single wavelength, usually 850nm. The AURA 4D runs three, 850nm, 940nm and 1064nm, and fires them together in every mode (Triple NIR). That raises a fair question: are the extra near-infrared wavelengths actually doing anything, or are they a spec-sheet flourish? Here's the honest answer.
What is 850nm light?
850nm is a wavelength of near-infrared light, just past the edge of what the human eye can see (visible light ends around 700nm). It's one of the most widely used invisible wavelengths in consumer technology: security-camera illuminators, TV remotes, and iris scanners all run on or near 850nm. In skincare it earns its place for a different reason: at this wavelength, light passes through the skin's surface with relatively little absorption by water or melanin, reaching roughly 5mm into the deep dermis, the layer where collagen is made. That combination of penetration depth and strong absorption by cellular mitochondria is why 850nm has become the default near-infrared wavelength in serious LED therapy masks.
First, what "near-infrared" even means
Visible red light stops around 700nm. Past that, light becomes invisible to the eye but keeps going: near-infrared (NIR). Because you can't see it, an NIR mask can look "off" mid-session even while it's working; that's normal. What matters is that NIR penetrates deeper than any visible color, reaching the layers of skin where structural repair and collagen remodeling happen. We cover the full wavelength ladder on The Science page.
850nm: the workhorse depth
At 850nm, near-infrared reaches roughly the deep dermis, about 5mm down. This is where fibroblasts build collagen and where deeper wrinkles, scarring, and loss of firmness live. 850nm is absorbed efficiently by the mitochondria in these cells, boosting ATP (cellular energy) and accelerating repair. If a mask has just one NIR wavelength, 850nm is the sensible choice, and it's why it's the industry default.
940nm: reaching further, working slower
940nm is a longer wavelength, and longer generally means deeper. It pushes toward the hypodermis, the layer below the dermis, where slower processes like deeper circulation and tissue recovery take place.* On its own, 940nm is less about collagen and more about supporting the tissue underneath. It's a complement to 850nm, not a replacement.
1064nm: the deepest of the three
1064nm is the longest wavelength on the AURA 4D and the deepest-reaching, past roughly 7mm. On the 4D it runs alongside 850nm and 940nm in every mode, so the near-infrared band reaches further down than 940nm alone.
Why stacking them beats any one alone
Here's the core idea: 850nm and 940nm peak at different depths. Run only 850nm and you get strong mid-to-deep dermal coverage but taper off below it. Run only 940nm and you reach deeper but under-serve the collagen layer. Fire them together, with 1064nm reaching deeper still (Triple NIR), and the absorption curves overlap and extend, giving you a broader, more continuous band of near-infrared coverage from the dermis down into the hypodermis in a single session.
Why three NIR wavelengths beat one
850nm, 940nm and 1064nm peak at different depths. Fired together (Triple NIR), their coverage overlaps and extends, from the dermis down into the hypodermis in one session.
Think of it like watering a garden with three sprinklers set to different ranges instead of one: you cover more ground evenly, rather than soaking one patch and missing the rest. That's the practical case for three NIR wavelengths over one.
What this means for your results
For surface concerns (acne, redness, glow), NIR isn't the star; blue, amber, and red do that work, and both AURA masks share those. Triple NIR earns its keep specifically on the deep, structural, slow-to-change concerns: firmness around the jawline, deeper wrinkles, scar texture, and the kind of "my skin bounced back" firmness that shows up around the 8-12 week mark. If those are your priorities, the extra wavelengths are the feature to pay for. (For the realistic timeline on all of this, see how long red light therapy takes to work.)
Who actually needs Triple NIR
Worth it: if anti-aging and firmness are your main goals, if you're in your 40s+ and targeting structural change, or if you want the most complete at-home configuration RIVATA makes. That's the AURA 4D, which runs 850nm, 940nm and 1064nm together in every mode.
Not essential: if your focus is acne, tone, or everyday glow, a single-NIR mask covers you well. The AURA Lite LED light therapy mask runs 850nm (no 940nm or 1064nm) alongside the same red, blue, and amber wavelengths, the full surface toolkit at a lower price. We break down the whole decision in AURA 4D vs AURA Lite.
How Triple NIR works on the AURA 4D
Triple NIR isn't a separate mode. Pick your treatment mode (Anti-Acne, Glow, Anti-Aging, or Full Rejuvenation) and 850nm, 940nm and 1064nm run alongside it automatically. A session runs 5 to 10 minutes, depending on the mode, and the mask shuts itself off. As always: clean, dry, bare skin first (near-infrared passes through skin better without serums or oils in the way), moisturizer afterward, and strong actives like retinol about 12 hours away, as in the AURA Ritual.
850nm vs other common wavelengths
vs 630-660nm red: visible red works shallower (the epidermis and upper dermis), which makes it the tone-and-fine-lines workhorse. 850nm picks up where red tapers off, carrying stimulation into the deep dermis. They're teammates, not rivals, which is why every AURA mode pairs a visible color with NIR.
vs 810-830nm: some devices use these intermediate NIR wavelengths, and they behave similarly. 850nm is the most widely used and best-supported consumer NIR wavelength, with mature LED hardware that holds consistent output.
vs 940nm and 1064nm: longer still, deeper still, gentler per photon, covered above. The point of the AURA 4D red light therapy mask is that you don't have to choose: Triple NIR runs 850nm, 940nm and 1064nm together.
What the research says
Near-infrared photobiomodulation is one of the better-studied corners of light therapy. Across the clinical literature, wavelengths in the 800-900nm band have been studied for collagen density, skin elasticity, and post-inflammatory recovery, with the consistent finding that results build over weeks of repeated sessions rather than overnight. That's the pattern our own protocol follows: 5 to 12 minutes per session, 3-5 sessions a week, judged honestly at the 8-12 week mark. The full wavelength-by-wavelength breakdown lives on The Science page.
Want all three NIR wavelengths?
The AURA 4D runs Triple NIR in every mode. The AURA Lite keeps it simple with 850nm, the workhorse depth.
AURA LiteFlexible · in stock- 272 LEDs, 4 wavelengths: red, blue, amber, 850nm NIR
- 200g, cordless, one button
- 10 to 12 minute sessions
AURA 4DFlagship · waitlist open- 400 LEDs, 7 wavelengths incl. Triple NIR (850, 940, 1064nm)
- Contoured shell with cooling pads
- 5 to 10 minute sessions
FDA-cleared · Free US shipping · 90-day money-back guarantee
FAQ
Can I feel near-infrared light working?
Not really: it's non-thermal and invisible. You won't feel heat or see much glow from the NIR wavelengths specifically. That's expected; the effect is at the cellular level over weeks, not something you sense in the moment.
Are 940nm and 1064nm safe?
Yes. Like the other AURA wavelengths they're non-UV and non-thermal, and the mask shuts itself off at the end of every session. Keep your eyes closed during every session. Standard cautions apply if you're pregnant or nursing, take photosensitizing medication, or are managing a skin condition: check with your doctor first.
Does the AURA Lite have any near-infrared?
Yes, the Lite includes 850nm NIR. It just doesn't add 940nm and 1064nm (Triple NIR), which are exclusive to the AURA 4D.
Is 850nm light visible to the eye?
Barely: you may catch a faint red glow at the LED itself, but the beam is effectively invisible. Phone cameras often pick it up brightly, which is an easy way to confirm your mask's NIR LEDs are firing.
Is a higher number always deeper and better?
Not always. Skin absorbs some wavelengths more than others, so depth doesn't climb in a straight line with the number. 850nm, 940nm and 1064nm are used because each reaches a different depth, and together they cover the deeper layers more evenly than any one of them alone.