Duncan Specialty Products 2 oz. wax resist Resist the urge to be ordinary with Duncan Wax Resist, the perfect product for creating a variety of looks and designs on your pieces! Wax resist is an emulsion specially created to repel underglazes and glazes applied over it. Apply it directly onto your piece or over base colors the wax burns off during firing, revealing your unique designs and/or colors beneath. Must be fired in a ceramic kiln for proper use.