madtown saidIf you are there for a week and going to the beach each day I would recommend SPF 30. There's really not much benefit to SPF higher than that.
Well, I dunno about that, I read that a SPF 30 is like a SPF 10 when you apply it because no one applies it perfectly, so I'd recommend a 70+, it's not that expensive!! I'd rather spend a few bucks more than become a prune
From a New York Times article on the benefits of SPF higher than 30:
"Studies over the years have shown that sunscreen with an SPF, or sun protection factor, of 30 blocks about 97 percent of ultraviolet rays. A rating of 15 means 93 percent of UV rays are blocked, and anything higher than 30 remains in the 97 or 98 percent range.
In 1999 the Food and Drug Administration recommended that sunscreens with an SPF higher than 30 be labeled '30+,' mostly to prevent people from developing a false sense of security that might lead them to spend more time in the sun.
What many people do not realize is that the amount of sunscreen applied plays an enormous role. A study in The British Journal of Dermatology this year found that applying less than two ounces over the entire body at one time can leave people with an SPF rating far lower than what is on the bottle. Some studies have shown that people typically apply just 10 percent of the amount recommended.
THE BOTTOM LINE
Above SPF 30, the increased protection is minimal."
Here's a link to the article: http://www.nytimes.com/2007/08/07/health/07real.html?_r=1