After seeing all the potential dangers of the sun is high time to draw up a list of tips for preventing them.
Exposing oneself to sole gradually: the first day is a higher risk because the skin is unprepared intense sun exposure and prolonged
Do not expose hours in the hot sun: it is estimated that about 50% of ultraviolet rays reaching the earth between the hours of 11.00 and 15.00.
Attention to reflective surfaces (water, snow, sand)
The risk of erythematictic increases in the vicinity of these areas the snow is able to reflect about 80% of ultraviolet rays, the sand more than 25%.
Warning a tan share in l ‘intensity of radiation increases by 12% per 1000 m of height is therefore more hazardous exposure in the mountains and the sea
Also all shadow will absorb more than 50 percent of all ultraviolet rays.
Archive for May, 2009
Ultraviolet radiation increases the number of active melanocytes, consequently stimulating the production of melanin.
This substance (also present in the hair and in some parts of the eye) is synthesized by melanocytes from tyrosine, tryptophan and phenylalanine. It is responsible of tanning in the short and long term. In the first case, usually only seen in people with moderately dark complexion, there is an oxidation of melanin, which tends to become darker.
These phenomenons manifest itself immediately after solar exposure and recede within a few minutes.
The melanin, while we ensure a darker color, the other protects the skin from the effects of solar radiation by acting as a real filter. This substance is able to impede the penetration of ultraviolet rays in the deeper layers of skin. More on How our skin is protects by erythematictic
The lack of adequate skin protection during sun exposure can lead to unpleasant appearance of blemishes such as spots or discoloring skin. Although in many cases, the sun is not directly responsible, it may become so in specific circumstances. And ‘the case, for example, senile lentigo, which usually appear in late adulthood as a result of prolonged exposure to ultraviolet solar rays or artificial (tanning lamps).
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