I love spray sunscreen and always bring two cans (Aveeno was my recent favorite because it didn't irritate my skin) but I've been antsy about the news regarding hormone disrupting ingredients in spray sunscreens. I've been looking at the EWG site's sunscreen ratings ("The Environmental Working Group is the nation’s leading environmental health research and advocacy organization.").
http://www.ewg.org/2012sunscreen/all-sunscreens/?
They rate 1,800 Sunscreens and products with SPF based on:
UVB PROTECTION (SPF)
UVA PROTECTION
UVA/UVB BALANCE
SUNSCREEN STABILITY
HEALTH CONCERN
They tend to list results alphabetically and with a color and a number. Ideally, there is a green symbol and a low number (a 1 or a 2) next to your favorite sunscreen. Probably not, though. They're sticklers!
Best Beach & Sport Sunscreens:
http://www.ewg.org/2012sunscreen/best-s ... unscreens/Best Beach & Sport Sunscreens (
Non-Mineral). (Mineral sunscreens protect better, but they're often chalky and streaky.)
http://www.ewg.org/2012sunscreen/best-s ... l-options/"None of these non-mineral sunscreens earn our top rating. But here are some choices for people who prefer to avoid nano-scale minerals (zinc and titanium) or who object to the feel or smell of mineral sunscreens. The trade-off? All non-mineral products contain at least one sunscreen chemical considered to be a potential hormone disruptor."
I also tried entering simply the word "Spray" and they listed 188 sprays. None of the sprays received a "Green" rating for high scores in all areas. The best score is a "1", and no sprays got that rating. The best a spray received is a "3"; there are 16 spray sunscreens that are rated 3. I'll probably bring some high rated lotion & two spray cans of the least unhealthful sprays.

. . . I'll admit, this is more than most people will want to know.

For one week a year, perhaps 1) the broad spectrum sunscreen that 2) you will wear faithfully is really the best choice . . . in the same way that the electrolytes you're actually willing to drink are the best electrolytes.