Know the facts about ultraviolet rays, to avoid negative effects such as skin cancer.
The sun is a source of energy that is free and can be converted into other energy forms. But, for humans, whether the light effect to the skin healthy. Here are 10 facts about the effects of ultraviolet (UV) rays from the sun on human skin.
1. How does the sun burning our skin?
When you are sunbathing, ultraviolet rays from the sun which strike directly into the skin will kill the cells that normally work to make new skin cells. Ultraviolet A (UVA) rays alone can penetrate the skin into the deeper layers, but the combination of UVA and UVB rays burn the outer skin layer because of the energy released per photon is greater, namely 8.37 eV.
2. Why is skin burned by the sun so red?
To repair the damaged cells and get rid of dead cells, blood vessels automatically go the extra mile to deliver more blood to the burned area. This blood flow which makes your skin turns red and warmer.
3. What is the effect when exposed to the sun burned skin?
Damaged cells send messages to the brain, signaling that their sense of injury and activate the skin to be sensitive to pain. This makes your skin sensitive to touch.
4. Why your skin colors become brown?
The UV light burns the skin, organ will producing more pigment melanin that causes skin to become dark. Less precise when most people want to make the skin become brown with sun all day at the beach, because the production of melamine take a long time.
5. Why the red-haired skin of the human race can not make the skin brown?
Although melanin can protect human body from UV radiation, these pigments also have harmful effects. Pheomelanin, other types of melanin that makes the hair red or yellow and the skin becomes brighter; it actually has a greater risk of skin damage, such as sunburn and even skin cancer.
6. How does sunscreen or sun block?
Sunscreen / sun block is an effective way to protect skin from UVA and UVB rays that potentially damage the skin. Chemically, sunscreen / sun block contains a number of substances that can withstand UV rays and reflect.
7. Does sun block SPF 30 is better than SPF 15?
Not completely true. SPF is only an indication of how much time you have before the skin burns. For example, using sun block SPF 2, then you can bask in the sun two times longer than if not wearing them.
Meanwhile, SPF 30 will provide protection 30 times compared to natural protection your skin and ward off 97 percent of UVB rays. When compared, SPF 15 refutes the same rays up to 93 percent.
8. Why humans are more often sunbathe on the beach?
Because the sun's rays can bounce on the sand, water, and snow, so the light is absorbed skin fold. There are also a number of other driving factors, namely summer, noon, and the region around the equator, so that in such situations, the production of UV rays are the highest. Although cloudy, 80 percent of the sunlight can still penetrate clouds, fog even thicker.
9. Is the skin a little red mark you okay?
No. UV irradiation can mutation skin cells and cause cancer. Keep in mind, people who experience skin burning in childhood and adolescence have an increased risk of skin cancer is greater when they mature. Because melanoma has a long enough time to develop in the human body. Other adverse effects, in addition to cancer, are early wrinkles and eye cataracts.
10. What is the best way to cure the burning skin?
It is immediate consumption of aspirin. The best time is before the turn of the day, because aspirin can work less than a day to prevent skin damage worse.
Also, drink lots of water can also help create new skin cells. Can also by rubbing the skin of the red with a cream moisturizer such as aloe Vera or hydrocortisone. If the effect is actually causing pain head, body chills, or fever, call your doctor immediately.
That's the facts about ultraviolet. Do early protection that we are not exposed to the negative effects of ultraviolet light.
