Today, with the technology of LED lamps, people can create biological light with different wavelengths for therapeutic purposes. One of the most popular is the application of red light therapy.
The origin of red light therapy
Since the time of ancient Greeks and Romans, there have been records of the use of light for healing and the use of sunlight at various frequencies to treat many different diseases. In 1903, Niels Ryberg Finsen, a Danish doctor, was awarded the Nobel Prize for valuable contribution to the cure of tuberculosis lesions on the skin by using concentrated light. His discover thereby advent a new avenue for clinical medicine, the using of light as a medical treatment, also known as phototherapy.
Decades after that, phototherapy was notable in clinical practice of doctors. For instance, light with blue-green spectrum is a solution for jaundice in newborns; red light and near infrared have a significant effect on the healing process. Nowadays, the phototherapy is applied worldwide in professional beauty salon.
What is the nature of light?
Natural light, or sunlight, is composed of electromagnetic radiations with different wavelengths, which are both visible and invisible.
The wavelengths visible to the human eye range from 380 nm to 700 nm, consisting of 7 different bands of color as of a rainbow.
The shorter and longer bands of wavelengths are invisible, which includes:
1) Infrared: is electromagnetic radiation with a wavelength of 700nm to 1mm, has some physiological benefits at some point.
2) Ultraviolet: The electromagnetic radiation is from 10nm to 380nm, very harmful to the body, notable for causing skin cancer.
The term “biological light” refers to the combination of one or more wavelengths in the visible spectrum (red, orange, yellow, green, blue, indigo, and violet) that have beneficial effects with certain pathologies or improve skin condition. Of all the colors, red light is proved to have a more active role, which leads to the popularity of red light therapy in health care. Moreover, intense red light is also utilized to destroy the hair follicles in the laser hair removal treatment.
The mechanism of phototherapy
The colored light emitter is specially designed for use in professional skin care rooms. The colors will cause some different effects on the human body. The skin is the largest organ of the body, and it can reflect the process of blood circulation, metabolism and the process of change of mind, physiology.
In the phototherapy, the main purpose is to help the skin absorb biological wavelengths, which penetrate deeply into the subcutaneous layers and have beneficial effects on hormonal activity and metabolism in the body. Also, when the eye receives light, it passes the signal to the brain. Once the eye receives color light, it will lead to physiological stimulation.
What is red light therapy?
The optimal wavelength of red color is from 630-660 nm.
The waves will permeate up to 8-10 mm through the skin and initiate a series of biological events: stimulates cellular life, increases blood circulation, enhances cell production, collagen under the skin, and improves the replacement of old cells with new cells.
These characteristics make red light therapy a great aid in the healing and rejuvenation of the body. Nowadays, the therapy is mainly used as a complementary treatment for a variety of skin diseases. It is also used as an anti-aging method in many beauty salons.
The therapeutic applications of red light therapy in medicine
The significant conditions that red light can handle well include acnes, bruises, sunburn, psoriasis, etc. Moreover, it can also have analgesic effects on musculoskeletal pain such as arthritis; pain resulted from damaged muscle and ligaments. Scientists also claimed that red light could help ease the pain in terminal cancer patients.
Here are some advantages of red light therapy:
1) It is completely natural
2) It does not require the body to take in any medications or other chemicals
3) It is a non-invasive procedure (no needles or punctures)
4) It does not irritate or damage the skin
5) It is not painful
6) Compatible with many types of skin
7) No side effects
8) You can apply the therapy at home simply by using a handheld red light LED
9) It is approved by the FDA
The basic procedure of red light therapy
The face is thoroughly washed. Also, all dirt and makeup cosmetics are removed from the skin.
Halogen light (no harmful ultraviolet radiation) is projected through a filtered lens that then reflects onto the body or the area being treated. The position and size of the light can be adjusted. The benefit of not using direct light is that there are no side effects (such as burns) and that light color is purer and more transparent.
Check for the skin condition, show red light as directed by the doctor.
Note: This is an additional treatment that reduces the duration of treatment and increases the effectiveness of therapy and skin care, rather than replacing the medication. Your doctor will prescribe medicine for you if necessary.
In conclusion, red light therapy is the perfect choice for healing and skin care because of its versatility. It not only helps to alleviate the pain in many conditions but also is a significant contribution to the regeneration of body cells. However, the effectiveness of red light on your body is varied depending on the individual’s physical state and genetic factors. Therefore, to achieve the desired result, you have to consider other contributors such as nutrition and a healthy lifestyle.