You may have heard everywhere that you need protection from the sun. This is because the sun has harmful effects on the skin whichcan cause premature skin aging, skin cancer, sunburn and a host of other problems. Exposure to ultraviolet radiation from the suncontributes to 90% of the symptoms of premature aging skin. Many skin changes that are generally believed to be due to aging, likewrinkles and easily irritated, was also due to prolonged exposure toUV radiation.Here are a variety of UV light wavelength Based.
UV-A
UV-A is the most uv rays cause radiation. UV rays-a covers 95percent of the radiation that reaches Earth's surface and 30 - 50 times more common than uv-b rays, although less intense. UV-Aradiation was thought to have little effect against skin damage, butnow studies show that UVA is a major contributor to skin damage and wrinkles. UV-A penetrates the skin deeper than UV-b and workmore efficiently. UV-A radiation penetrates to the dermis (secondlayer of skin) and can damage the fibers in it. The skin loseselasticity and becomes wrinkled. The intensity of UV-A radiation is more constant than the UV-b (all day). In addition, UV-A canpenetrate glass.
UV-B
Uv-b rays are usually only damage the outer layer of skin(epidermis). This ray has the highest intensity between the hours of10:00 and 14:00 when bright sunlight. Some UV-b rays the sunblocked by the ozone layer in the atmosphere. Uv-b does notpenetrate glass. In small amounts, uv-b radiation is useful for the synthesis of vitamind in the body, but excessive exposure to these rays can cause skinredness / burning and harmful effects of free radicals that trigger thesynthesis of erythema and cataracts. Uv-b rays can also causephotochemical damage to the dna cells that trigger the growth ofskin cancer.
UV-C
UV-C radiation caused the biggest danger and cause the mostdamage. But fortunately, the majority of these rays are absorbed in the ozone layer atmosphere. With the widespread damage to the ozone layer due to the release of certain chemicals into the environment (ozone depleting chemicals) such as freon ac andothers, feared to be a lot of uv-c that qualify for the earth and causevarious adverse effects in humans
Tips on protection from ultraviolet radiation
Seek shade
Seek shade when you are doing outdoor activities in the afternoon or evening (especially on at 10:00 until 15:00). Do not think you are safe just because of overcast skies. Ultraviolet radiation can pass through clouds and fog
Wear long-sleeved shirt, long pants, gloves, broad-brimmed hat or umbrella
Avoid radiation through thin clothing. When using an umbrella,choose an umbrella made opaque.
Use a moisturizer (lotion) sunscreen and repeat the applicationseveral times, according to the directions on the label.
Choose a broad spectrum sunscreen with a sun protection factor(spf) of at least 15. Sunscreen does not provide full protection. Do not be too long in the hot sun even if you use sunscreen. Seek the shade.
Wear sunglasses
Wear sunglasses that filter out ultraviolet radiation. Your eyes do nothave a natural defense against the sun, and eye damage from UVrays can cause cataracts. The use of sunglasses to block more than95% UV-A radiation.
Give extra protection to infants and children
The skin of infants and children are more sensitive than adult skin,so they need extra protection when out in the hot sun for a long time.Children should wear a hat, long-sleeved clothes and trousers.When you apply sunscreen on the child, make sure that has grippedparts of their bodies are most vulnerable, including hands, ears,face, and neck. Avoid using sunscreen on infants.
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