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| | What is SPF, UV....... (Site not responding. Last check: 2007-10-21) |
 | | Most broad-spectrum sunscreens and sunblocks with an SPF of 15 or higher do a good job against UVB and short UVA rays; if they also contain avobenzone, zinc oxide, or titanium dioxide, they should be effective against the entire UVA spectrum. |
 | | The Skin Cancer Foundation considers sunscreen one part of a comprehensive sun protection program, along with sun-protective clothing, sunglasses, shade, and sun avoidance from 10 A.M. to 4 P.M. UVB (Ultraviolet-B) Short-wave solar rays of 290-320 nanometers. |
 | | More potent than UVA in producing sunburn, these rays are considered the main cause of basal and squamous cell carcinomas as well as a significant cause of melanoma. |
| www.skincancer.org /prevention/spf.php (615 words) |
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