The Norwood scale is a common graphic scale of the basic seven levels of male hair loss. Depending on which image most closely represents your level of male pattern balding will give you a number designation representing the severity of your hair loss. The more severe your hair loss (Level IV and above) the harder it is to reverse, and the more apparent and visible the hair loss is. Men with the highest levels of hair loss on the Norwood scale usually have to take more dramatic measures to regain their hairline, while men with less severe stages of hair loss (Levels I through III A) can more easily reverse their pattern hair loss. Procerin is most effective and provides the fastest results in men that are below a Level V on the Norwood scale.