I just read about the amount of chemicals in cosmetics, and it's pretty interesting stuff:
Cosmetics contain many different kinds of chemicals, but of particular concern are a group of preservatives called parabens, which by some estimates are found in 99% of all 'leave on' cosmetics, and 77% of "rinse off" cosmetics. These are known hormone disruptors: evidence suggests they can mimic the female hormone estrogen, and a lifetime of increased exposure to estrogen is linked to a heightened risk of breast cancer.
The jury's still out on whether chemicals in cosmetics lead to health problems, but this is worth noting: The FDA does not review or approve cosmetics. Still, I looked into the above example, and over the last few years, FDA-associated scientists researched the safety of parabens. The official stance? "FDA believes that at the present time there is no reason for consumers to be concerned about the use of cosmetics containing parabens."
So where do you stand? Are you concerned about chemicals, or do you feel safe?