Excerpts: There are two types of ingredients in shampoo. One type cleans your hair. The other type strokes your emotions. I'm holding a bottle of Pantene Pro V, one of the world's most popular shampoos. Of the 22 ingredients in this bottle of shampoo, three clean hair. The rest are in the bottle not for the hair, but for the psychology of the person using the shampoo. At least two-thirds of this bottle, by volume, was put there just to make me feel good. and In May, 2008, Jane Houlihan, director of research for the Environmental Working Group, reported on the dangers of cosmetics and personal care products to a House subcommittee. She believes that these products, including shampoo, are the biggest source of human exposure to dangerous chemicals. According to Houlihan, "companies are free to use almost any ingredient they choose in personal care products, with no proof of safety required." Consumers are not properly warned of possible dangers because of a "lack of standards and labeling loopholes." Let's just say that the less you hang out with any of these chemicals, the better off you are, we all are. Go here for the full story: http://www.salon.com/env/good_life/2009/08/13/shampoo/ [1]