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ARTICLES Sun Damage

Source: www.allterrainco.com
Topic: Sun Damage
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Sort Desciption: People who enjoy the outdoors are becoming increasingly concerned about skin cancer. Unfortunately, many of them are not well informed on the dangers and how to adequately protect themselves. ...

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People who enjoy the outdoors are becoming increasingly concerned about skin cancer. Unfortunately, many of them are not well informed on the dangers and how to adequately protect themselves. The following text is from the Skin Cancer Foundation and is helpful in explaining key terms relating to sun protection. SPF (Sun Protection factor) Measures the length of time a product protects against skin reddening from UVB, compared to how long the skin takes to redden without protection. If it takes 20 minutes without protection to begin reddening, using an SPF 15 sunscreen theoretically prevents reddening 15 times longer about 5 hours. (Actually, it may take up to 24 hours after sun exposure for redness to become visible.) To maintain the SPF, reapply sunscreen every two hours and right after swimming. The Skin Cancer Foundation recommends SPFs of at least 15, which block 93 percent of UVB. While SPFs higher than 30 block only 4 percent more UVB, they may be advisable for sun-sensitive individuals, skin cancer patients, and people at high risk of developing skin cancer. They also allow some margin for error if too little sunscreen is applied. While SPF is the universal measurement of UVB protection, no comparable standard exists for UVA. Scientists worldwide are working to develop a standardized testing and certification method to measure UVA protection. Broad-spectrum protection: The phrase indicates that a product shields against UVA as ...

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