Let the LED focus on your skin health

First, the impact LED optical parameters of biological effects
Biological effects of the LED depending on the optical parameters, including different wavelengths, flow (fluence), intensity (powerdensity), irradiation time, continuous wave or pulse wave and the number of treatments in clinical treatment interval. Different wavelengths can reach different locations of skin tissue (Figure 1). Generally, the longer the wavelength, the stronger penetrability at 400nm through the skin tissue at a distance not exceeding 1mm, 514nm through a distance of about 0.5mm ~ 2mm, 630nm penetration distance of about 1mm ~ 6mm. Different wavelengths of light may also be organized in groups of different color absorption. In clinical red (630nm ~ 700nm) is often used in the treatment of deep skin tissue structures such as sebaceous glands; blue (400nm ~ 470nm) in photodynamic therapy (photodynamic therapy, PDT) for the treatment of lesions in the skin ; If you want to reach the dermal layer of the skin takes longer wavelengths, such as 660nm wavelength can reach the reticular dermis layer of the skin, thus the dermis fibroblasts play a role, and this is the LED highbay light source for the principle of IPL world. Table 1 lists the optical parameters of the LED used in the clinic.






Second, LED medical applications in dermatology
1 IPL (photorejuvenation)
IPL technology is defined as the use of continuous intense pulsed light at low energy density for non-ablative skin rejuvenation treatment methods. Since its inception in 2000 within a few years, the rapid popularization of IPL technology nationwide in major cities has been widely used to improve the skin has become the main means of photoaging, this technique can significantly improve skin wrinkles, texture rough, irregular pigmentation and large pores and other phenomena have been a number of technology professionals and beauty aspirations were recognized. The characteristic skin photoaging histological changes are dermal matrix degeneration of elastic fibers and collagen fibers mature obstacles, resulting in loose skin and wrinkles.
Study found that visible to near infrared LED light penetrates the skin epidermis to reach the skin dermis, through thermal and photochemical role to promote regeneration of elastic fibers and collagen fibers and rearrange, so as to achieve reduce skin wrinkles, increase elasticity effect. Table 2 lists the IPL part of the LED light source devices.



(2) prevention or treatment of post-inflammatory hyperpigmentation
Inflammatory skin pigmentation in the skin beauty physics and chemistry is common, it is difficult to avoid the phenomenon easily occurs particularly in Asian populations. For example, in clinical practice after laser treatment to reduce the degree of skin pigmentation, are generally too strong to avoid ultraviolet rays of the season, ask the patient to avoid the sun, sunscreen, etc., but post-inflammatory hyperpigmentation is difficult to avoid entirely. In recent years, studies have found, 660nm of the LED light can prevent or even treat this inflammation occurs after skin pigmentation, skin beauty industry this will be a new research hotspot.
3. Promote wound healing
Various visible to near infrared wavelength of the LED light can promote the growth of epithelial cells after injury, promote wound healing. While for chronic lower extremity diabetic ulcer healing have a very good therapeutic effect.
4. Reduce inflammation
Series of studies have shown that already has LED has anti-inflammatory effect. Found that the 635nm LED light can be suppressed gingival fibroblasts release of inflammatory mediators - prostacyclin E2 (PGE2), thereby reducing inflammation of the gums. In the pulsed dye laser treatment of skin photoaging before irradiation in advance if using LED light source, can reduce the dye laser-induced skin erythema, swelling and pain and discomfort. Radiation therapy in breast cancer patients using LED highbay light source in advance before irradiation can reduce the side effects of radiotherapy.
5 scar prevention
Keloid is clinically affect the beauty and difficult to treat form of skin disease, skin injury caused by overgrowth of connective tissue. Patients often have physical scars. Clinically start small and hard red papules, slowly increasing, resulting in round, oval or irregular scar above the leather, was stretched out crab-shaped, skin smooth, shiny, may be associated with pain, itching and discomfort. Clinical difficulties, the effect is not ideal. Studies have found that LED can significantly improve the patient's pain, itching and discomfort, flattening the scar, but also has the advantages of non-invasive.
6 Other role
In addition, LED can be used as a free ultraviolet phototherapy apparatus for photodynamic therapy, treatment of hair loss, reduce skin damage after ultraviolet irradiation and so on.
In short, as a new type of light source, LED has been gradually applied to the skin medicine, with the innovative LED lamps and medicine for the LED mechanism of biological effects, LED medical application on the skin will have limitless prospects. While LED with higher security, can be used as home medical equipment.

More info you can visit: www.lead-lighting.com