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Medical And Aesthetics
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Medical And Aesthetics
On a daily basis doctors all over the world undertake thousands of laser treatments to efficiently deal with medical, cosmetology, and aesthetic challenges. Since 1960, when the laser phenomenon was discovered, the technology has constantly advanced to transform it into routine and safe application. The efficiency and high technology nature of lasers drive their presence in our life on a bigger and bigger scale. In particular, aesthetic medicine, dermatology and cosmetology have become those areas which cannot be imagined without laser technologies anymore.
Laser emission features a number of specific characteristics that define how and at what depth alive tissue is affected. Depending on a wavelength the laser targets various components within human skin, that can either reflect or absorb laser energy, such as water, hemoglobin, melanin, oxyhemoglobin. The latter ones, according to a known theory of selective photothermolysis, are chromophores, that is components that selectively absorb laser energy. For example, one of the most popular aesthetic treatments today is laser hair removal which is carried out with the help of 808nm wavelength laser emission. This wavelength, as shown in the picture below, is well absorbed by the melanin - a pigment in hair that determines the density of color. This wavelength also penetrates into the skin deep enough to target hair bulbs. As a result the hair follicles degenerate and the hair ceases growing. You can check how well each chromophore can absorb laser emission depending on a wavelength on a graph below.