The moment in The Bell Jar when Esther Greenwood realizes...

The moment in The Bell Jar when Esther Greenwood realizes after thirty days in the same black turtleneck that she never wants to wash her hair again, that the repeated necessity of the act is too much trouble, that she wants to do it once and be done with it, seems like the book's true epiphany. You know you've completely descended into madness when the matter of shampoo has ascended into philosophical heights.