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What does red and infrared light do?

Have you ever wondered what happens to your body when you’re exposed to red and infrared light? The unique therapeutic properties of red and near-infrared light have made photobiomodulation one of the most exciting scientific discoveries in decades. While these two types of light may seem similar, they actually have very different effects on our bodies. We’ll explore the fascinating world of red and infrared light, and delve into the ways they can impact our bodies.

red and infrared light

what are Infrared and Red Light?

Infrared and red light are both types of electromagnetic radiation that are part of the electromagnetic spectrum. Infrared light has longer wavelengths than visible light and is typically experienced as heat. Red light has longer wavelengths than blue or green light and is part of the visible spectrum. Infrared light is commonly used in various applications, such as remote controls, thermal imaging cameras, and in heating systems. Infrared light therapy is also used in medicine and wellness, where it is believed to help reduce inflammation, improve circulation, and promote healing[1].

Red light therapy, on the other hand, uses red or near-infrared light to penetrate the skin and stimulate the production of ATP (adenosine triphosphate), which is the energy source for cells[2]. This can help to boost circulation, reduce inflammation, and promote healing. Red light therapy is commonly used in skin care, as well as for pain relief and wound healing[3].

Both infrared and red light have shown promising results in various studies, and are generally considered safe, non-invasive, and well-tolerated.

How do red and infrared light work differently?

Infrared and red light are both forms of electromagnetic radiation, but they work differently in the body:

  • Penetration Depth: Near-infrared penetrates deeper, up to 30 mm below the skin’s surface. Red light reaches 3-8 mm depth to target more superficial tissues.
  • Mechanisms: Infrared predominantly stimulates cellular repair and anti-inflammatory processes. Red light strongly activates the mitochondria for increased energy production.
  • Healing Effects: Infrared best assists chronic issues like arthritis, joint pain, and inflammation. Red light provides quicker relief for minor pains and injuries.
  • Targeted Areas: Near-infrared works well for larger treatment areas like the back, hips, and legs. Red light can be used on focused spots like scars or small joints.
  • Light Sensitivity: Infrared causes less sensitivity or eye strain in some individuals. Red light provides brighter illumination that may bother sensitive eyes.

While their effects overlap, selecting the right wavelength delivers optimal results. Protocols can combine both for enhanced benefits.

How do red and infrared light work differently?

Different Benefits of  Red and Infrared Light

Unique Benefits of Red Light

– Increases collagen and elasticity for anti-aging skin rejuvenation
– Stimulates hair growth by activating follicles
– Accelerates workout recovery when applied before or after
– Provides immediate pain relief for minor injuries
– More stimulation of ATP for a short-term energy boost

Unique Benefits of Infrared Light

– Reduces chronic joint aches and arthritis-associated inflammation
– Relieves nerve and neuropathic pain conditions
– Lowers oxidative stress from conditions like diabetes or hypertension
– Helps regain mobility from long-term injuries
– Increased blood flow to promote recovery of damaged muscles

Common benefits

– Wound healing and tissue regeneration
– Increased blood circulation and oxygenation
– Improved immunity and resilience
– Better sleep quality and energy
– Anti-depressant and mood enhancement

Are Red and Infrared Light Safe?

Red light and infrared therapy are generally considered safe when used as directed. Both types of therapy use a form of low-level light therapy (LLLT) that does not produce heat and is not known to cause damage to cells or tissues. However, it is important to follow the manufacturer’s instructions and avoid overexposure to the light. It is also important to note that some people may be more sensitive to light therapy and experience side effects such as headaches or eye strain. As with any new treatment, it is best to consult with a healthcare professional before trying red light or infrared therapy, especially if you have any underlying medical conditions or are taking any medications.

How to Use Red and Infrared Light for Therapy?

Red and infrared light therapy can be used in a variety of ways, depending on your needs. Here are some tips for using these therapies for therapy:

1. Choose a high-quality device: Look for a device that offers the right wavelength and intensity for your needs. Reddot Red Light Therapy Panels are a great option, as they are scientifically proven to be effective and offer customizable settings.

2. Use for the recommended duration: Follow the instructions for your device and use it for the recommended duration. Overexposure can be harmful, so it’s important to use these therapies as directed.

3. Use for specific conditions: Red and infrared light therapy can be used for a variety of conditions, including skin rejuvenation, wound healing, pain relief, and muscle recovery. While Reddot red light therapy panels offer both red and infrared wavelengths, providing a more comprehensive and effective treatment.



Red and infrared light therapy offer unique benefits that can promote healing and improve overall health. By choosing high-quality devices like Reddot Red Light Therapy Panels, you can enjoy the many benefits of these therapies from the comfort of your own home. So why wait? Try red and infrared light therapy today and experience the science of wellness!


[1]Mosca RC, Ong AA, Albasha O, Bass K, Arany P. Photobiomodulation Therapy for Wound Care: A Potent, Noninvasive, Photoceutical Approach. Adv Skin Wound Care. 2019;32(4):157‐167.

[2]Karu T. Primary and Secondary Mechanisms of Action of Visible to Near-IR Radiation on Cells. Journal of Photochemistry Photobiology. 1999 Mar.

[3]L Brosseau, V Welch, et al. Low level laser therapy (classes I, II and III) in the treatment of rheumatoid arthritis. Cochrane Database Syst Rev. 2000;(2):CD002049.

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