What is Red Light Therapy Wavelength?

Red light therapy (also known as red light therapy) is a health therapy that has received increasing attention in recent years. It is a non-invasive treatment method that uses red light of different wavelengths to treat different diseases and pains. Before undergoing red light therapy, we need to understand what type of wavelength is beneficial to us.

According to expert research and experiments, 660nm red light and 850nm near-infrared light are the best wavelengths for red light therapy. These wavelengths can penetrate deep into the skin and stimulate energy production in cells, thereby promoting cell repair and regeneration.

Red light is not just "red" light. Red light therapy uses wavelengths in the visible (red) and invisible (near-infrared) spectrum. Red light therapy also has different names for the treatment. For example, you may have heard of low-level light therapy (LLLT), photobiomodulation, or low-level laser therapy. These names are often used in scientific research on red light therapy.

Low-level laser therapy is a form of red light therapy because it delivers the same low-level laser wavelength to the skin; low-level laser therapy is only used in clinical settings. Researchers generally use lasers in their studies.

But now that LED technology is constantly improving, LED phototherapy devices are found to be safer and more suitable for consumer use, and Health Optimise sells a variety of red light and near-infrared NIR phototherapy devices for use at home.

What is red light?

Red light is a type of light that is visible to the naked eye. Red light has a wavelength range of 630nm – 700nm. Red light is widely used in both the medical and beauty industries. The most beneficial red light wavelength for the skin is generally considered to be 660nm, which is close to the upper limit of visible red light. 660nm has deeper penetration than 630nm and has similar effects.

Red light wavelengths penetrate the skin and sebaceous glands, restoring and improving the skin's tone and texture. 630 nm and 660 nm are the two most widely studied wavelengths in the red light spectrum. A large number of literature and studies cite the various benefits that 630nm and 660nm red light wavelengths bring to the human body. For example: red light can penetrate the entire range of skin tissue to promote healing and regeneration.

What is Near-infrared (NIR)?

Near-infrared (NIR) light technology belongs to the infrared spectrum, with a wavelength range of 700nm – 1100nm. NIR is invisible and can be effectively used on the surface of the skin and penetrate about 1.5 inches (3.81 cm) into the body.

NIR emits a longer wavelength than red light, which allows it to penetrate deeper into the body. The longer the wavelength, the deeper the penetration, so NIR has been widely used. This is also the reason why NIR is similar to red light but has completely different effects.

Red light wavelengths of 810nm have unique neurological benefits that can stimulate the brain. Many forward-thinking scientists believe that light therapy will be a treatment option for brain disorders in the near future.