You know it’s smart to wear sunscreen, but why hurt the earth while saving your skin? Sunscreens can damage the environment with chemicals that take ages to break down and end up bleaching coral reefs (a couple of nasties: the UV inhibitors 4-methylbenzylidene camphor and octocrylene). Many also contain a raft of harmful ingredients that don’t add anything in the skin-protection department. Fortunately, an increasing number of products address at least one, if not both, of these problems.