I have just had oak staircase made and fitted. I have been told to seal it with Sanding Sealer and Soft White Polish and I have bought these. Trouble is the containeers do not have instructions. I am happy to apply sealer and sand between coats but how do I apply the polish? It is in a 2.5 litre container and looks like an amber liquid with a white suspension. I have shaken it up but it is far from white? Do I brush it on / apply with cloth etc...?