Vermeister UP-GRADE is a special pre-dosed shader that can be added to any Vermeister waterborne products, sealer or top coat, single or two component, to lighten or darken the original color of the wood, eliminating unpleasant colour changes. Especially for oak and, in general, for all light coloured woods, UP-GRADE in its white version tends to neutralise yellowing and excess shading due to water soluble extractives naturally present in the wood. Each coat increases the toning effect and it is advisable to carry out a preliminary test to verify the final look. Available in the following shades: WHITE, GREY, BLACK, AMBER.