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The use of light to treat human diseases is a very old way, as early as thousands of years ago in China and other countries when the use of sunlight to treat the disease. The LED as a new type of light source, with its biological effects gradually been recognized by people, is now gradually applied to medicine and play an active role.

 

The Application of LED in Dermatology

1. Photorejuvenation (photo rejuvenation)

The photorejuvenation technique is defined as the use of continuous intense pulsed light for non-exfoliating rejuvenation at low energy densities. Photon rejuvenation technology has been widely used throughout the country since its inception in 2000, and has been widely used in major cities. It has become one of the main means to improve the skin's aging. This technology can significantly improve the skin wrinkles, texture Rough, irregular pigmentation and large pores and other phenomena, has been a lot of technical professionals and beauty appeal of the recognition. The characteristic histological changes in skin light aging are elastic fibrous degeneration and collagen fiber maturation in the dermal matrix, resulting in loose and wrinkled skin.

The study found that visible light to near infrared LED light penetrates the skin epidermis to reach the dermis of the skin, through the photothermal and photochemical effects, to promote the elastic fibers and collagen fibers regeneration and rearrangement, so as to reduce skin wrinkles, increase the effect of elasticity.


2. Prevention or treatment of inflammation after the pigmentation

Inflammation after skin inflammation occurs in skin physics and chemical beauty is common, it is difficult to avoid the phenomenon, especially easy to appear in the Asian population. For example, in the clinical to reduce the degree of skin pigmentation after the laser treatment, generally avoid the UV is too strong season, Zhu Huanzhe to avoid the sun, smear sunscreen, but after inflammation is still difficult to completely avoid pigmentation. In recent years, studies have found that 660nm LED light can prevent or even treat this inflammation after the emergence of skin pigmentation, which will be a new skin beauty research hot spots.


3. Promote wound healing

Can be seen near the infrared band of various types of LED light can promote the growth of epithelial cells after trauma, and promote wound healing. At the same time for the lower extremity of diabetic patients with chronic ulcer healing also has a very good therapeutic effect.


4. Reduce inflammation

A series of studies have shown that LED has an anti-inflammatory effect. The study found that 635nm of LED light can inhibit the gingival fibroblast release of inflammatory mediators - prostaglandin E2 (PGE2), thereby reducing the inflammation of the gums. In the pulse of laser treatment of skin light aging before using LED light source in advance, can reduce the dye laser caused by skin erythema, swelling and pain and discomfort. Radiation therapy in patients with breast cancer before irradiation with LED light source can reduce the side effects of radiotherapy.


5. Scar prevention

Keloid is a skin disorder that is clinically affected and is difficult to treat. It is caused by hyperproliferation of connective tissue after skin damage. The patient often has a scar body. In the clinical start for the small and hard red papules, slowly increase, resulting in round, oval or irregular scar, higher than the leather, crab-like outward stretch, smooth skin, shiny, may be associated with Pain, itching and discomfort. Clinical treatment difficulties, the effect is not ideal. Studies have found that LED can significantly improve the patient's pain, itching and other discomfort, so that scar flat, while non-invasive advantages.

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