Black pigment in Mascara carcinogenic?

Most of us are aware of health risks associated with the foods we eat and the ingredients in them, but I suspect that many people are in the dark about the dangerous ingredients in cosmetics, since, unlike foods, we don't ingest them. But cosmetics can be scary too, and here's a prime example: The FDA has recently approved a black pigment to be used in cosmetics that contains small, but supposedly safe, amounts of carcinogens.

D&C Black No. 3 is also known as bone black, which is interesting considering where it comes from -- it's made from cattle bones that are heated to over 700 degrees. Mmm, sounds lovely, huh? But regardless of how gross it is to make makeup out of charred cow bones, I have to ask -- is there any amount of carcinogens that are safe? What do you think?

(via The Beauty Brains)