You got the pad, you found a good spot by the couch, and now the real question shows up: how many minutes, and how many times a week? It's one of the most common things people ask about red light at home, and the honest answer is simpler than the internet makes it sound. Start with the maker's guidance, stay consistent, and don't assume more is better. Here's how to think about it.
The short answer
For most home LED pads, the device maker's own instructions are the best starting point. NovaaLab, for example, lists 20-minute sessions for its Light Pad, Deep Healing Pad XL, Knee Ultra and Light Boot. On the Light Pad page, its safety tips say to limit sessions to 10 to 20 minutes per area, 3 to 5 times a week (NovaaLab).
That's a useful rhythm to keep in mind: short sessions, a few times a week, done regularly.
Why "more" isn't automatically better
It's tempting to think that if 20 minutes is good, an hour must be great. Research on light and cells points the other way.
Scientists who study photobiomodulation (the technical name for red and near-infrared light therapy) describe what's called a biphasic dose response. In plain terms, low levels of light tend to have a stimulating effect on cells, while high levels can have an inhibitory effect (Hamblin, AIMS Biophysics, 2017). That's lab and mechanism research, not a rule written for your living room, but it's a good reason to stick with the recommended time instead of stacking extra sessions.
The Cleveland Clinic makes a similar practical point: red light appears to be safe when used short-term and as directed, but devices used too often or not according to directions could damage skin or unprotected eyes. It also notes that long-term safety of these devices isn't known yet.
Session length depends on the device
Not every device is built the same, so session times vary a lot. A few examples straight from the makers:
| Device | Price at Sauna Chiller | Maker's listed session |
|---|---|---|
| Novaa Light Pad | $349.90 | 20 minutes |
| Novaa Deep Healing Pad XL | $599.90 | 20 minutes |
| Novaa Knee Ultra | $269.90 | 20 minutes |
| Novaa Light Boot | $369.00 | 20 minutes |
| Novaa Pulse R | $399.00 | 10 minutes |
| Novaa Extra-Strength Healing Laser | $299.90 | 5 minutes per day |
| Illuminate Red V2 panel | $2,295.00 | 5 minutes |
Prices are as listed on saunachiller.com at the time of writing. Session times come from each maker's product information, so always check the manual that ships with your device.
Why the spread? Power and distance matter. A handheld laser like the Extra-Strength Healing Laser is listed by NovaaLab at up to 800 mW/cm² at the skin, a lot more concentrated than a flexible pad, so its listed session is much shorter. The Illuminate Red V2's maker says its design delivers a full session in 5 minutes. Pads with lower output spread over a bigger area typically ask for longer.
The takeaway: the right time is the one written for your device, not a number borrowed from someone else's panel.
How often per week?
Most of the routines you'll see land somewhere between a few times a week and daily, and the research world uses a similar range.
What studies have used
In one controlled trial on skin appearance, 136 volunteers were split into groups, and the treated groups used red or red plus near-infrared light twice a week, with results measured after 30 sessions (Wunsch and Matuschka, Photomedicine and Laser Surgery, 2014). That's one study on one use, so it isn't a universal plan, but it shows that a steady, moderate schedule over weeks is how this kind of research is usually done.
A simple home rhythm
Taking the maker's guidance and that steady approach together, a lot of people settle into something like this:
- 3 to 5 sessions a week on the area they care about most, following the listed session time
- One area at a time, especially with a smaller pad, rather than moving it around to cover everything in one night
- Rest days built in, the same way you'd treat training
If you're just starting, the low end is a fine place to begin. Notice how you feel, then decide whether the routine fits your week.
Fitting it into your week
Consistency beats intensity. The best schedule is the one you'll still be doing a month from now.
- Anchor it to something you already do. After dinner, while you read, or after an evening sauna once you've cooled off and dried off. Our guide to using red light pads with sauna or cold plunge has a few easy evening routines.
- Leave it set up. A pad that lives next to the couch gets used. One in a drawer doesn't.
- Use a timer. If your device has one built in, let it handle the clock; if not, a phone timer works fine.
- Protect your eyes. The Cleveland Clinic recommends shielding your eyes with at-home devices.
- Check in with your doctor first if you're pregnant, take photosensitizing medication, or have a history of skin cancer. NovaaLab gives the same advice.
Choosing a device with your schedule in mind
If you know you'll only realistically do 10 minutes on a weeknight, a shorter-session device might suit you better. If you like a slower 20-minute wind-down, a pad works well. For a side-by-side look at Novaa's pads and wearables, see our Light Pad vs Knee Ultra vs Light Boot vs Deep Healing Pad XL comparison. If you're weighing a full panel instead, our home red light panel buyer guide walks through what to look for.
FAQ
How long should a red light therapy session be?
Go with your device's instructions. NovaaLab lists 20-minute sessions for its Light Pad, Deep Healing Pad XL, Knee Ultra and Light Boot, while higher-output devices like its handheld laser list much shorter sessions.
Can I use red light therapy every day?
Some makers list daily use for certain devices, and others suggest a few times a week. NovaaLab's Light Pad safety tips say 10 to 20 minutes per area, 3 to 5 times a week. Follow the guidance for your specific device.
Is it bad to use red light therapy too long?
Lab research describes a biphasic dose response, where too much light can be less helpful than a moderate amount, and the Cleveland Clinic warns that overuse could damage skin or unprotected eyes. Sticking to the listed time is the simple, safe choice.
Can I do red light and sauna on the same day?
Many people do, often using a pad after the sauna once they've cooled down and dried off. Our guide to pairing red light pads with sauna or cold plunge covers simple ways to do it.
This article is for general information only and is not medical advice. Red light devices are wellness products and aren't intended to diagnose, treat, cure or prevent any disease, so check with your doctor first, especially if you're pregnant, photosensitive or managing a medical condition.
Sources - Cleveland Clinic, Red Light Therapy - Hamblin MR. Mechanisms and applications of the anti-inflammatory effects of photobiomodulation. AIMS Biophys. 2017;4(3):337–361. - Wunsch A, Matuschka K. A controlled trial to determine the efficacy of red and near-infrared light treatment in patient satisfaction, reduction of fine lines, wrinkles, skin roughness, and intradermal collagen density increase. Photomed Laser Surg. 2014;32(2):93–100. - NovaaLab, Novaa Light Pad product page and safety tips, and NovaaLab product listings for session times - Product specifications as listed on saunachiller.com