THIS BAR WAS FORMULATED TO EXCEL ON ALUMINUM. THOSE INDIVIDUALS WHO PRE-SAMPLED THIS BAR COMMENTED ON THE CLARITY, DEPTH, BRILLIANCE, AND COLOR PRODUCED BY THIS BAR.UNLIKE MANY BLUE BARS, THIS MENZERNA BLUE FINAL FINISH BAR IS NOT SIMPLY A “COLORING” BAR. IT HAS A #3 CUT TO IT. THE SHINE IS RATED AN 8, WHICH MAKES IT AN IDEAL FINAL FINISH ROUGE BAR.