Always use a coloured polish which matches as closely as possible to that of the shoe so as not to alter its colour. Avoid neutral polish which tends to have a greying effect on the upper. Use shoebrushes made from natural materials with long, soft bristles. These will polish more effectively. Use cream polishes extremely sparingly. The polished finish is obtained by allowing the cream to penetrate the pores of the leather without blocking them; an excess of grease will only prevent the leather breathing. A well-polished shoe should appear glossy and sheer. Avoid liquid coatings and scuff-coat polishes; they may speed up the process but at the cost of irreversibly ruining the shoe, covering it with a waterproof coating which will dry out the leather and which is removed with difficulty.