Exploring the Benefits and Effects of Near-Infrared Light (NIR)
Let's discover what near-infrared (NIR) light is, how it interacts with the human body, and its scientifically proven healing benefits. Based on NASA research and clinical findings, this article summarizes the key advantages in an easy-to-understand way.
What Is Near-Infrared Light?
Infrared Spectrum and Near-Infrared Definition
When light from the sun or a heat source is dispersed through a spectrum, the band located just beyond the red visible light is called infrared. The shortest wavelength range within it is known as Near-Infrared (NIR). The general classification by wavelength is as follows:
- Near-Infrared (NIR, IRA): 0.75 – 1.4 µm
- Mid-Infrared (IRB): 1.4 – 8 µm
- Far-Infrared (FIR, IRC): above 8 µm
Medical and Industrial Applications
Infrared light produces stronger thermal effects than visible or ultraviolet light, making it widely used in medical and industrial fields. It is often applied for sterilization, disinfection, and the treatment of joints and muscles. Near-infrared light penetrates approximately 6 mm beneath the skin, effectively transferring heat and stimulating the production of ATP and nitric oxide, which support tissue repair and healing.
NASA’s Research Discovery
NASA (the U.S. National Aeronautics and Space Administration) conducted research on specific light wavelengths, including near-infrared, to maintain astronauts’ health in space. Their findings revealed that while far-infrared affects only the skin surface (about 0.5 mm), near-infrared light can penetrate up to 6 mm—over 12 times deeper—making it significantly more effective for tissue-level recovery.
Benefits and Effects of Near-Infrared Light
According to NASA and multiple clinical studies conducted over the past three decades, near-infrared light has demonstrated the following healing effects (Reference: Nature Journal, October 2006):
Improves Blood Circulation
By penetrating deep into the skin, near-infrared light promotes the production of nitric oxide (NO), which dilates capillaries and enhances blood circulation. This helps increase oxygen delivery throughout the body.
Relax Muscle and Recover Fatigue
The thermal wavelength stimulates blood vessels and skin tissues, helping disperse and eliminate toxins and waste products. As a result, it supports improved blood flow, muscle relaxation, pain relief, fatigue recovery, and stress reduction.
Activate Metabolism
Near-infrared light activates mitochondria—the energy center of cells—enhancing ATP production and cellular metabolism. This increased energy helps prevent aging and may slow degenerative symptoms such as hair loss, arthritis, sprains, and rheumatism.
Supports Brain Function
Some studies suggest that specific light wavelengths can improve brain function, supporting cognitive performance and learning ability, and may help prevent dementia. Further clinical research is ongoing.
Product Introduction
P Peach Tech's Red Light Therapy devices combine red and near-infrared light to provide dual stimulation for both the skin surface and deeper tissues. (Please make sure to review the product’s intended use and safety guidelines before application.)
Featuring 48 visible red LEDs (660nm) and 60 invisible near-infrared LEDs (880nm)—a total of 108 LEDs—the SALUS
Featuring 72 visible red LEDs (660nm) and 144 invisible near-infrared LEDs (880nm)—a total of 216 LEDs—the HEALTHNIA
Featuring 72 visible red LEDs (660nm) and 144 invisible near-infrared LEDs (880nm)—a total of 216 LEDs—the HEALTHLIGHT
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