The Derwent Burnisher is a hard colourless pencil which when used over layers of pigment provides a rich polished finish. Burnishing pushes the pigment into the paper and leaves a very well blended, photo like finish. By sealing the image with a heavy wax it gives the image a polished or reflective look and makes the colours appear brighter.
The Burnisher can also be used for the wax resist technique; draw your required design, this will add a layer of wax to the surface, then add your colour. The wax layer will resist the coloured pencil thus leaving that part of your drawing white.