I did a quick search to see if this has been posted already, but if it has been and I missed it, I will gladly delete this thread.

I haven't had a chance to read through the study yet because I'm at work, but here is the link (there may be a page asking you to sign up for a newsletter, just click on the 'No Thanks' link):

www.cosmeticsdatabase.com/special/sunscr...mmary.php?nothanks=1

That is a link to the basic findings; there are links on the right hand side for some more detail.

The great thing is that they reviewed hundreds of products and gave them a score - so it gives you a lot of choices, and you can search for your sunscreen and see how it scored. My MAC Prep+Prime unfortunately wasn't one of the sunscreens tested.

So, what do you guys think of this study? What are its flaws? What are its strong points?

It seems like their main complaints with sunscreens are: not enough protection, some are too low SPF, unsafe ingredients, fragrance/irritating ingredients, false claims (and going along with this - the FDA should regulate sunscreens more effectively), spray sunscreens, powder sunscreens, etc.