Did you know Paula Dorf mascara contains mercury? And OPI nail polish contains dibutyl phthalate, a plasticizer that has been banned for use in cosmetics in the European Union and linked to a possible risk of impaired fertility. According to the non-profit Environmental Working Group, "due to gaping loopholes in federal law, companies can put virtually any ingredient into personal care products. Even worse, the government does not require pre-market safety tests for any of them."

Before you slather any more cow placenta on your face (found in Z. Bigatti's Skin Tone Provider), check out EWG's Skin Deep Cosmetic Safety Database. It rates tens of thousands of personal care products on a scale of one to ten, with one being the safest. Everything from Soft & Dri Antiperspirant (9) to MAC lipstick (5) are included.