Well it is applied like polish, but not on the top of the enhancement!
'More Than White' is a liquid white acrylic that is applied to the prepared tip of the enhancement before applying the overlay, for a permanent French look. It isn't a polish.
It works under Wraps, L&P or Gels. For those who find using white powder difficult or in the case of a wrap, instead of a French tip, and in the case of gels, for a whiter white than you can get with a white gel.
Makes maintaining the look very quick and simple as well ... just prepare, repaint the white tip concealing the regrowth and apply the chosen overlay.