Walkers Cesco UG18 Blue Grey Brush On Underglaze

Shake well before use. For use under or on a glaze. (On an un-fired glaze may require an addition of FK100 Flux Extender). Apply a thin coat of colour, fire to the temperature of the glaze being used. Thin with water only if required. May be used on unfired clay or bisque and glazed when dry.