TANNING YOUR SKIN
Because of its light, its warmth, and its energy, the sun is the basis of life for fauna and flora. The sun stimulates spirit and soul. When the sun is shining, nothing can get the better of us so easily.
THE UV SPECTRUM
Sunlight is energy, which is transferred by means of rays with different wave lengths, whereby we differentiate between ultraviolet rays (ultraviolet light), the visible light, and the warm infrared radiation (IR light). Untraviolet light is divided up into UV-A, UV-B, and UV-C rays. The dangerous UV-C rays are filtered by the athmosphere and do not reach the surface of the earth. The composition and the strength of the UV-A and UV-B rays vary and depend on the time of day and year, air pollution, degree of altitude, and the intensity of reflection (water, snow, etc.), for example.
WHAT HAPPENS WHEN YOU TAN
Tanning is no more than the skin's own sun protection. Some of the sun's rays are invisible, such as UV light, which gives you the tan. Once UV light reaches the skin, the upper skin layers react by thickening. The UV-B component is responsible for indirect deep tanning, stimulating the skin's pigment cells that produce melanin, the brown pigment that gives you that tan. The production process needs a run-up time of several days, but the dark skin coloring gives the skin its own sun protection. This is why UV-B is so important when you take a tanning session on a sunbed before you go on vacation. UV-A darkens melanin already in the skin; this direct surface tan is immediate, but it doesn't last.
Sunlight is energy, which is transferred by means of rays with different wave lengths, whereby we differentiate between ultraviolet rays (ultraviolet light), the visible light, and the warm infrared radiation (IR light). Untraviolet light is divided up into UV-A, UV-B, and UV-C rays. The dangerous UV-C rays are filtered by the athmosphere and do not reach the surface of the earth. The composition and the strength of the UV-A and UV-B rays vary and depend on the time of day and year, air pollution, degree of altitude, and the intensity of reflection (water, snow, etc.), for example.
WHAT HAPPENS WHEN YOU TAN
Tanning is no more than the skin's own sun protection. Some of the sun's rays are invisible, such as UV light, which gives you the tan. Once UV light reaches the skin, the upper skin layers react by thickening. The UV-B component is responsible for indirect deep tanning, stimulating the skin's pigment cells that produce melanin, the brown pigment that gives you that tan. The production process needs a run-up time of several days, but the dark skin coloring gives the skin its own sun protection. This is why UV-B is so important when you take a tanning session on a sunbed before you go on vacation. UV-A darkens melanin already in the skin; this direct surface tan is immediate, but it doesn't last.
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