Beauty to Die for?

The list of dangerous ingredients is quite long -- the National Institute of Occupational Safety and Health has stated that nearly 900 of the chemicals used in cosmetics are toxic -- but here are some of the major ones that you will definitely want to avoid:

• Paraben, a chemical found in underarm deodorants and other cosmetics that has been shown to mimic the action of the female hormone estrogen, which can drive the growth of human breast tumors.

• Phthalates, plasticizing ingredients (present in nearly three-quarters of 72 products tested by the Environmental Working Group), which have been linked to birth defects in the reproductive system of boys and lower sperm-motility in adult men, among other problems.

• Musks, used as fragrances, can accumulate in your body, and have been linked to skin irritation, hormone disruption, and cancer in laboratory studies.

• Artificial fragrances, which are among the top five known allergens, and can cause asthma and trigger asthma attacks.

• Methylisothiazolinone (MIT), a chemical used in shampoo to prevent bacteria from developing, which may have detrimental effects on your nervous system.

• Toluene, made from petroleum or coal tar, and found in most synthetic fragrances. Chronic exposure linked to anemia, lowered blood cell count, liver or kidney damage, and may affect a developing fetus.

• Mineral Oil, Paraffin, and Petrolatum, these products coat your skin like plastic, clogging pores and creating a build-up of toxins. They also slow cellular development, which can cause you to show earlier signs of aging, and are a suspected cause of cancer and disruption to hormonal activity.