Wednesday, June 24, 2009

Sunscreen And UV Rays - How To Protect Against Skin Cancer

By Adrian Fletcher

Skin cancer is an increasingly common disease that is thought to be caused by over exposure to Ultraviolet (UV) radiation. This combined with certain genetic predispositions, like fair skin, can make a person particularly vulnerable to developing skin cancer. Most people get exposed to UV radiation from spending time in the Sun. As it is practically impossible to avoid being in the Sun, minimizing the amount of time spent in the Sun or limiting it's impact on the skin is often advised. This article will cover some of the ways to protect yourself from the damaging affect of the Sun. It concentrates on how sunscreen can protect you from developing skin cancer.

The first thing to point out is that sunscreen should never be seen as the only thing you can do to limit your exposure to sunlight. It should be used in conjunction with some of the points mentioned 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 sunglasses that absorb UVA and UVB radiation, as they can damage the eyes. Not only can they cause melanoma developing but they can lead to cataracts and other diseases.

After taking all these precautions you should then apply sunscreen. Cover parts of your body that are not protected by clothing and come into direct contact with the sunlight.

Sunscreen comes in two forms. There is chemical sunscreens that absorb UV rays and physical sunscreens that reflect the UV rays (sometimes referred to as sun blocks).

A way to determine the effectiveness of a sunscreen is to look at it's Sun Protection Factor (SPF). The popular recommendation in this respect is to always go for an SPF of 30+. SPF pertains to the ability to protect the skin from UVB radiation that is thought to be the worst form of radiation for sun burn and skin cancer. However, it does not protect against UVA radiation, which researchers feel can be just as dangerous as UVB. Products that are known as Broad Spectrum sunscreens protect against both UVB and UVA rays.

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.

Always reapply sunscreen every 2 hours regardless of if you are active or not. Go for a sunscreen that you like on the skin as this makes it more likely that you will continue to use and reapply it.

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