I was recently reminded about the idea of three-in-one shampoo. This idea sounded great, but the majority of my friends seemed to be grossed out by the idea. Personally, I did not care very much about the product, but I found the conversation very interesting. There were many valid arguments on both sides. Some examples of the arguments were, “if it is good enough to clean my head, it is good enough to clean the rest of me”, “hair and skin are very different things”, and “better than showering with dish soap”.