Frequently Asked Questions
-
Three things: published specs you can verify, real support you can reach, and a 90-day home trial backing it up. Budget panels rarely publish irradiance data, often use single-circuit designs that can't run red and near-infrared independently, and typically offer little to no warranty or returns. Celvana publishes full specs, runs five wavelengths on independent circuits, includes a 3-year warranty, and lets you try it at home for 90 days.
-
Most users run 10-20 minute sessions at a distance of 6-12 inches. You can run red, near-infrared, or both circuits depending on your focus. Consistency matters more than session length — daily use is more effective than occasional long sessions.
-
6 to 12 inches for most uses. Closer increases intensity; further covers more area. The published irradiance figures are measured at 6 inches.
-
Red light therapy is commonly used alongside exercise, skincare, and recovery routines. If you have a specific medical condition, are pregnant, or take photosensitizing medication, check with your doctor first.
-
Not necessarily. Red light therapy follows a biphasic response — there's an optimal dose, and going beyond it doesn't add benefit. More isn't better. We recommend 10–20 minute sessions, leaving at least 6 hours between sessions on the same area. Consistency over time matters more than long or frequent sessions. Using your panel a few times a week, regularly, is the approach studied across the research.
-
Use it on clean, bare skin. Red light (630/660nm) doesn't pass through clothing effectively, so covered skin won't receive meaningful light. Near-infrared penetrates slightly further, but for consistent results, expose the area you're treating directly to the panel.
-
No. Red light panels aren't built for sauna conditions — sustained heat and humidity shorten LED lifespan and can damage the electronics. Use your panel in a normal room-temperature environment.
-
Yes, as long as the cord is a grounded 3-prong cord rated to handle the panel's power draw. The XT1500 draws up to 455W and the XT900 up to 270W — any standard heavy-duty extension cord rated above that will work. If you're unsure, our support team can help you confirm.
-
630nm and 660nm (red) are absorbed by the skin's surface and dermis. 810nm, 830nm, and 850nm (near-infrared) penetrate deeper into muscle and joint tissue. Each has been studied for different applications — the wavelength selector on our Science page explains each in detail.
-
The XT1500 is a full-body panel (308 dual-chip LEDs, >163 mW/cm² at 6"). The XT900 is sized for targeted treatment of face, joints, and recovery zones (180 dual-chip LEDs, >105 mW/cm² at 6"). Both run the same five wavelengths with independent circuit control. Use the "Compare Models" tool on either product page for a full side-by-side.
-
We publish irradiance measured at 6 inches, our FCC and RoHS testing documentation, and full technical specs on every product page. Independent spectroradiometer testing is underway and will be published when complete.
-
The panel runs at 58 dB at 1 meter during operation — comparable to background conversation. We use ball bearing cooling fans rated for 100,000 hours, quiet enough to use alongside music, a podcast, or meditation.
-
Because near-infrared light is invisible. The 810, 830, and 850nm wavelengths sit just beyond what the human eye can see (the visible range ends around 700nm). When NIR is running, you'll see only a faint pink or dim glow from those LEDs — that's normal. The panel is emitting significant light energy and working exactly as designed. The visible red glow comes from the 630/660nm LEDs.
-
Celvana panels are engineered as low-EMF devices. They contain only the components needed to power and cool the LEDs — no Bluetooth, no WiFi, no app — so there's no wireless signal being emitted during or between sessions. Any plug-in AC device produces a small magnetic field, but at the recommended treatment distance of 6 inches or more, levels are negligible. The absence of any wireless transmitter is a deliberate design choice and one of the simplest ways we keep EMF exposure minimal.
-
No. The LEDs are rated for 100,000 hours of use — at typical session frequency, that's well beyond the life of the device. There are no bulbs to replace and no consumable parts.
-
Photobiomodulation — the process by which red and near-infrared light is absorbed by mitochondria — has been studied across thousands of peer-reviewed papers for effects on skin, recovery, sleep, and cellular function. Our Science page links curated research organized by application.
-
This varies by individual and use case, and we can't promise specific outcomes. Research studies generally observe effects over consistent use across several weeks. The 90-day home trial gives you time to evaluate it for yourself.
-
Red light therapy is well tolerated by most people, but it hasn't been studied in pregnancy, so we recommend not using the panel if you're pregnant or nursing without first consulting your healthcare provider. The same applies if you take photosensitizing medication, have a condition affecting the eyes or skin, or are under a doctor's care for any medical condition. When in doubt, check with a licensed professional before starting.
-
Free US shipping on every order. Panels ship from our Nevada warehouse within 1-2 business days via FedEx, with most orders arriving in 3-5 business days. A signature is required on delivery.
-
Contiguous United States only at this time.
-
Try your panel at home for 90 days. If it's not right, return it for a full refund — no questions, no restocking fees. Return shipping is covered by the customer, and refunds are processed within 5 business days of arrival.
-
Every panel includes a 3-year warranty against manufacturing defects. Defective panels are repaired or replaced at no cost. Inbound shipping is covered by the customer; return shipping is covered by Celvana. The warranty covers normal household use and excludes drops, liquid damage, and commercial use.
-
Yes. Celvana panels are HSA/FSA eligible, and you can pay directly with your HSA/FSA card at checkout through Flex — no Letter of Medical Necessity or pre-approval required. Most buyers save roughly 20-35% by using pre-tax dollars, depending on their tax bracket.
-
Yes. Shop Pay Instalments lets you split your purchase into four interest-free payments or monthly plans — shown at checkout.
Science & Safety
-
Is eye protection required?
Red light (630/660nm) is comfortable to be near, but near-infrared (810-850nm) is invisible and can be bright on direct gaze. We include protective eyewear free with every panel — or simply keep your eyes closed during sessions.
-
FDA Registration
Celvana panels are Class II medical devices, manufactured in an FDA-registered facility. Each unit is third-party tested for electrical safety and electromagnetic compliance (FCC Part 15, RoHS).
Can't find your answer?
Our US-based support team is here to help with questions about your product, your order, or getting started. Most replies arrive within one business day.