Sunday, June 28, 2009

Sunscreen And UV Rays - How To Protect Against Skin Cancer

By Adrian Fletcher

Skin cancer is caused by being over exposed to ultraviolet (UV) radiation. If a person is more genetically predisposed to be more sensitive to UV rays then there is more chance that skin cancer will develop. Typical signs that a person is predisposed to skin cancer is a family history of the disease or a pale complexion that burns easily in the sun. As sunlight is the number one way in which people get exposed to UV rays, much advice is given about how to take precautions so that sunlight does not lead to skin cancer. This article will discuss some of these ideas. In particular it will focus on how sunscreen can help protect your skin and minimize the chances of developing skin cancer.

Before covering how sunscreen works, it should be reiterated that sunscreen is not the only way to protect your skin from the sun. It should be used in conjunction with some of the ideas covered below.

The best way to avoid UV radiation over exposure is to avoid sunlight when it is at it's strongest. Unsurprisingly, this is the period when it is at it's highest point in the sky, around mid day. Twelve noon is the worst time and the few hours around this time are also bad. Stay out of the sun during these times. If this cannot be done then take precautions.

Protect your skin with clothing. Cover as much of your body as practically possible. The arms and legs are often exposed so think about wearing long sleeve shirts or long pants if practical.

Always wear a hat in the Sun. A hat with a wide brim will protect your face and scalp from UV rays. Some people use a sun umbrella to protect themselves too.

Wear UV protective sunglasses as the eyes can also be damaged by UV rays.

After you have done these things you should then consider wearing sunscreen. Cover the parts of your body that are not covered by clothing. Some advise to cover the arms and legs with sunscreen even if they are covered by clothings as you might roll up your sleeves and it doubles the protection.

Sunscreens come in two types. The more common type is a chemical sunscreen that absorbs UV rays. The other type is a physical sunscreen that reflects or blocks the UV rays (these are sometimes called sunblocks).

The sun protection factor (SPF) of a sunscreen is often used to illustrate it's strength and effectiveness. Most advice suggests that you use a sunscreen with an SPF of 30+. However the SPF of a sunscreen only applies to UVB radiation. Although this is thought to be the worst form of radiation for skin cancer, recent research suggest that UVA radiation can be just as bad. If you want a sunscreen that protects against both UVB and UVA radiation then you should look at what is marketed as broad spectrum sunscreen.

Sunscreens that act as a sun block are particularly useful if you work outdoors or spend plenty of time in the Sun. They are a thick cream that provides a barrier to the sunlight. People often put them on sensitive parts of the body like the lips and nose.

Sunblock creams will consist of either titanium dioxide or zinc oxide (and are sometimes called zinc cream). If you don't fancy having a band of white cream covering your nose then an alternative is ultramicronized titanium or zinc sunscreens. They act in the same way as a sunblock but the cream is clear and is not obvious on the face.

Regardless of the type of sunscreen you go for, remember to always reapply it every 2 hours. This may vary depending on how active you are in the Sun. Get a cream that you like in terms of texture or fragrance so that the reapplication is not such a chore.

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