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Red light therapy and infrared saunas are often grouped together, but they provide very different types of therapy.

Red light therapy → light is the therapy.

Infrared sauna → heat is the therapy.

🔴 Red Light Therapy (Photobiomodulation)

• Uses specific wavelengths of red and near-infrared light

• The light itself is the therapeutic stimulus

• Does not require heating the body or producing sweat

• Wavelength, irradiance, treatment distance, and treatment time determine the light dose

• Common RLT devices use wavelengths such as 660 nm red light and 850 nm near-infrared light

🔥 Infrared Sauna

• Uses infrared radiation primarily to produce heat

• The therapeutic stimulus is the body's response to controlled heat exposure

• Raises body temperature and typically produces sweating

• Temperature and duration are important factors in the treatment

• It is a form of heat therapy rather than photobiomodulation

• What is it?

A wavelength describes the color of light and determines how deeply it penetrates into the body

• Why does it matter?

Different wavelengths interact with tissues differently. Many of the most studied red light therapy use wavelengths
in the mid-600 nm range and near-infrared light in the low- to mid-800 nm range for supporting cellular function. While some devices advertise numerous wavelengths, more isn't necessarily better.

• What we look for at Restore Within Wellness

What matters most is whether the wavelengths are supported by evidence. We prioritize devices that use well-studied wavelengths and are transparent about their specifications, rather than relying on a long list of wavelengths as a marketing feature.

• What is it?

Irradiance measures how much therapeutic light reaches your body. Think of it as the amount of light energy delivered to the treatment area over a specific amount of time. It's typically measured in milliwatts per square centimeter (mW/cm²).

• Why does it matter?

For red light therapy to be effective, your body needs an appropriate dose of light. That dose depends on several factors, including irradiance, treatment time, and the distance between you and the device. These factors work together to determine how much light your tissues actually receive.

• Is higher always better?

Not necessarily. More intensity isn't always more effective. A device with very high irradiance may simply require a shorter treatment time, while a lower-intensity device may require a longer session. The goal isn't to choose the highest number—it's to choose a quality device with transparent specifications and follow treatment guidelines that provide an appropriate dose.

• What we look for at Restore Within Wellness

We prioritize manufacturers that publish measured irradiance at specific treatment distances and provide clear, transparent performance data. We believe informed decisions are based on meaningful specifications—not just impressive marketing numbers.

• What is it?

Treatment area refers to how much of your body a device can comfortably cover during a session. Larger devices deliver light over a broader area, while smaller devices are designed for more targeted treatments.

• Why does it matter?

Even when your goal is to support one area, it's worth remembering that your cells don't work in isolation—they're part of an interconnected system.

The size of your device should be based on your treatment goals and lifestyle. If you're treating a small area like a knee, elbow, or face, a compact device may be all you need. For larger areas such as the back, hips, or legs, a larger panel can treat more tissue at one time, reducing the need to reposition the device multiple times during a session.

• Is bigger always better?

Not necessarily. The best device is the one that matches your individual goals. A larger panel may be ideal for full-body wellness or treating multiple areas at once, while a smaller device can be an excellent choice for targeted treatments, convenience, and portability.

• What we look for at Restore Within Wellness

We prioritize devices that are appropriately sized for their intended purpose and clearly communicate their recommended treatment distance and coverage area. Whether you choose a compact device or a full-body panel, selecting the right size can make your treatments more effective, comfortable, and easier to incorporate into your daily routine.