Sax True Flow Opaque Gloss Glazes serve as the basic “foundation” glaze for any ceramic studio. Glaze glides smoothly on bisque so no brush strokes will appear in the fired finish. Create new shades by mixing Foundation glazes with each other. High gloss finish does not need to be clear glazed. Glaze may be a different color during application and will change to desired look after required firing in a kiln. Color does not change when fired at Cone 6.