I guess this isn't technically an article, but I think it's still some pretty important information to have. A lot of cosmetic products (particularly those produced in the U.S.) contain known carcinogens (that is, chemicals that can cause cancer). This website has a reasonably comprehensive database of cosmetic products and rates their safety, as well as making suggestions for which products are the safest for you:

http://www.ewg.org/reports/skindeep/

Go check out some of the products you use every day. You might be surprised at what you find out.

I was surprised even lipgloss is of concern. I tried to put in a brand to check all their products but I could't seem to make that work