1,4-Dioxane

According to Wikipedia, 1,4-Dioxane is a clear colorless compound which is a liquid at room temperature. Oh, and it's also classified by the IARC as a substance "possibly carcinogenic to humans due to the fact that it is a known carcinogen in animals." Given that, I would assume you wouldn't readily find Dioxane in very many products. I would be wrong. It has been found as a contaminant in baby soap, moisturizers, hair dyes, and quite a few other cosmetics. For the scary facts, take a look here. It may be my bald ignorance speaking, but why does baby shampoo need to have 38 ingredients?