SPF的解释有错误~SPF不1定越高越好~而且有RISK~转个比较全面的~:)

http://en.wikipedia.org/wiki/Sunscreen#Sun_protection_factor


Potential health risks

Main article: Sunscreen controversy

Adverse health effects may be associated with some synthetic compounds in sunscreens.[42] In 2007 two studies by the CDC highlighted concerns about the sunscreen chemicals oxybenzone (benzophenone-3). The first detected the chemicals in greater than 95% of 2000 Americans tested, and the second found that mothers with high levels of oxybenzone in their bodies were more likely to give birth to underweight baby girls. [43]