Apologies for the confusing question; I did not know how to better ask it.
I was doing a search on wikipedia when I found this statement.
Wikipedia's entry on hair states;
"The hair that is visible is the hair shaft, which exhibits no biochemical activity and is considered "dead"."
With that being said, why does one use shampoo? Is it because of the scalp that requires nourishment and cleaning because skin is not of a "dead" nature? Or is it to maintain the silkiness and smoothness of hair? Because it seems really redundant to take care of and maintain something which is already "dead".