What is R+ | NIR+ and how does it work in LED therapy lights?

R+ and NIR+ are terms you will see on many red light devices. They simply describe the two kinds of light the device gives off: R+ is red light, and NIR+ is near-infrared light. Together they cover both the surface and the deeper layers of your body. This guide explains what each one does and why having both matters. For the basics first, see our guide on what red light therapy is.

What Is R+ (Red Light)?

R+ refers to red light, usually around 630–660 nm. Red light works close to the surface, so it is ideal for the skin. People use it to support collagen, skin tone, and the look of fine lines. It is the "visible" part of the spectrum you can see glowing on the device.

What Is NIR+ (Near-Infrared Light)?

NIR+ refers to near-infrared light, usually around 810–850 nm. You cannot see this light, but it travels deeper than red light — down into muscle and joints. That makes it useful for recovery, deeper comfort, and tissue repair.

How R+ and NIR+ Work Together

Your cells contain mitochondria that turn light into energy (ATP). Red light feeds the surface, and near-infrared reaches deeper tissue. Using both at once means a device can support your skin and your deeper tissue in the same session. The exact wavelengths of light a device uses decide how deep it reaches and how well it works.

Why the Light Spectrum Matters

A device with only red light covers the surface. A device with both R+ and NIR+ covers more ground — surface and depth. That wider spectrum is why combined devices are popular for general wellness and recovery. To see the full picture, explore the benefits and applications of red light therapy. Most of these devices use LEDs — here is how LED therapy compares to laser therapy.

Choosing a Device with R+ and NIR+

When comparing devices, check that it offers both red and near-infrared wavelengths, has a clear power rating, and covers the area you want to treat. Browse our range of red light therapy devices for the body that combine R+ and NIR+.

Is It Safe?

Red and near-infrared LED light is non-invasive and generally very safe. It uses no UV and does not burn the skin at normal doses. If you are curious about electromagnetic fields, read about the EMF safety of red light devices.

Frequently Asked Questions

What is the difference between R+ and NIR+?

R+ is red light that works on the surface, such as the skin. NIR+ is near-infrared light that goes deeper into muscle and joints. Many devices use both.

Do I need both red and near-infrared light?

Not always, but having both gives you wider coverage — surface and depth — from a single device. It is a good all-round choice.

Can I see near-infrared light?

No. Near-infrared light is invisible to the eye, so some devices add a faint red glow so you know it is on.

How do I know which wavelengths a device uses?

Quality devices list their wavelengths, usually around 630–660 nm for red and 810–850 nm for near-infrared. Check the product specifications before buying.