How does a sunburn occur? Easily explained

Sunburns are caused by UV rays and have fatal consequences for connective tissue and superficial skin. Most people assume only visible redness of the skin, but there is more damage behind it than you think.

How is sunburn caused? UV rays as a cause

Sunburn is caused by part of the sunlight, namely ultraviolet radiation. This consists of UV-A, UV-B and UV-C rays.

  • UV-A rays they are long-wave and penetrate the skin, attacking the connective tissue and causing faster skin aging.
  • UV-B rays they are short-wave and cause visible sunburn.
  • UV-C rays they are the most dangerous, but are largely intercepted by the ozone layer.

That’s what happens with the skin

In the case of sunburn, the corresponding areas of the skin become inflamed by the sun’s rays. Cell damage can also occur.

  • The skin is red due to the dilated blood vessels and the body sends more nutrients to this area as the skin cells need to be repaired.
  • Messenger substances such as histamine, prostaglandin, interleukin and serotonin are released in case of an overdose of UV radiation.
  • The first signs of sunburn appear after 3-6 hours and the peak is reached after 12-24 hours.
  • The skin then flakes off, the redness disappears and the tan remains. In the long run, sunburn has significantly aged the skin and increased the risk of skin cancer.

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