Summer, sun, holidays – many people are happy these days to rest from everyday worries and work stress. Nature and the beach call to Free, the risks and side effects to be displaces like. Especially, the skin needs in summer but also protection.
What the sun does with the skin?
The contained in the sunlight, harmful ultraviolet rays (UV) are held for the largest part of the earth’s surrounding ozone layer away. What matters, nevertheless, in humans, stimulates the pigment cells in the skin to produce a brown dye. This is a natural protection mechanism.
To a lot of sun but is light on the skin will trigger an inflammatory response: Certain messenger substances lead to redness of the skin, swelling as well as itching and Burning. There is a sunburn. Finally, die a lot of heavily damaged cells of the upper skin. How much UV-irradiation tolerated by the skin, is different from person to person.
What causes skin cancer?
UV radiation can damage the genetic material in the cell nucleus. Most of the so-damaged cells to die to protect the skin. You can also output cells for a Tumor. Your descendants will not stop to share – you are a cancer cells. In addition, excessive exposure to the sun can weaken the irradiation of the immune system, so that the body’s own protection mechanisms are weakened.
Sun cream: a protective shield for the skin
How does actually the sun cream?
Sunscreen can rays harmful UV either chemically or physically to stop it. Physical filters work by using the mineral pigments that reflect UV-radiation. They form a protective layer on the skin, the radiation bounces off.
Chemical filters can absorb UV radiation of a certain wavelength, and in other forms of energy – such as heat – convert. The sun protection factor (SPF) of a cream indicates how much longer the user and Creamed in the sun can stop, without the sunburn tournament.
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What is a mosquito bite makes the skin?
Mosquito females need blood to make eggs for reproduction. If you penetrate it with their proboscis in the skin to suck blood, but also tiny amounts of saliva from the substance inhibits blood clotting and widens the blood vessels in the human skin. So, the blood eye is for the mosquito easier.
At the same time, in the mosquito saliva proteins activate but also defensive reactions, the itching and inflammation at the injection site to the cell to the trigger. Other insects – such as wasps or bees – react with poison on suspected attacks from people. Here, too, the defensive reaction, with swelling and redness of the affected skin shows the body.
Cooling for sunburn and bites helps?
The Cool the itchy skin can slow down certain inflammatory processes and the forwarding of the itching on the nerves affect. However, the Cool help, especially during the application, suspected of the Berlin allergist Marcus Maurer. For the effects of other home remedies such as raw onions or Aloe Vera there is no evidence.
Heat against stitches
Why are heat rods against the pain?
In local hyperthermia, with so-called stitch healers with a pen for a few seconds of concentrated heat from 50 to 53 degrees is brought to the location on the Stitch. Studies have confirmed that the local symptoms of mosquito bites to be reduced or eliminated. Why this is so, is not clarified, according to allergists but.
A Thesis is that the nerves in the skin are sensitive to Heat, the Appeal forwarding off and as a result, the Jucksignal not more to the brain is mediated.
In the case of sunburn, or stings into the sea?
A combined therapy with a salt water and UV radiation can, under certain circumstances, complaints of the skin to relieve about in the case of psoriasis, the results of studies. And also acute wounds can be cleaned with a salt solution – if this sterile and 0.9 per cent, physiologically, i.e. the salt content of human blood corresponds to.
Sea water with an average salinity of 3.5 percent, but is too concentrated for the human body. This can dry out the damaged skin and the healing of even delay. Moreover, sea water contains germs and existing wounds may thus ignite.