For those of you trying hard to be as earth-friendly as possible, the folks over at Grist.org have taken some of the sting out of choosing an eco sunscreen.

Over the last several weeks, Grist staffers scooped up several of the readily available eco-brands—four sunscreens, which protect by absorbing ultraviolet rays, and five sunblocks, which provide a physical barrier on your skin—and tested them on our sun-deprived flesh. From the wan streets of Seattle to the blazing beaches of the Dominican Republic, we ventured out with nothing between us and the sun but some eco-promises.

Which brands held up, and which ones crapped out? Read on to find out.