Some sunscreens can pose risks. The sunscreens under question are chemical sunscreens (ingredients like: octylmethylcinnamate, oxybenzone, avobenzone, benzophone,
…mexoryl, PABA and PARSOL 1789.) These ingredients are in question because they have the ability to enter the blood stream and disrupt the endocrine system. Hormones are released by your endocrine glands, and hormones are lipid (fat) based molecules. Many of these sunscreen ingredients are also fat based, and have the ability to "confuse" your body's reception to it's own hormones. Sunscreen chemicals that mimic hormones often mimic estrogen, and are called xenoestrogen. There are several more reasons why chemical sunscreens are in questions: 1) because they generate a great amount of free radical activity. (free radicals are those things we're always trying to fight with anti-oxidants, free radicals can damage the cell wall) 2) chemicals sunscreen cause allergic reactions to many sensitive folks 3) finally, these chemicals are linked to damaging the coral reef! look up sunscreen and the reef and you will see photos of diseased and dying reefs. (and to think, it was only the effect of a minute amount of sunscreen washing off in the water daily, it had a big effect!) I hope you'll stay safe in the sun and make smart decisions when buying sunscreen.I use the EWG to help me with my product choices: http://www.cosmeticsdatabase.com/special/sunscreens2008/index.php I just bought #2 TruKid. It's awesome, good on sensitive skin, mildly scented, and broad spectrum physical block, which makes me happy I'm not harming the environment or myself. Answer Kevin Trudeau thinks it causes cancer, but then he spent time in prison. (MORE) 
