Underglazing is a decorative technique used in pottery and ceramics, where colored slips or glazes are applied to the surface of a piece before it is fired in a kiln. This method allows artists to create intricate designs and patterns that become part of the ceramic body, enhancing its visual appeal. The process typically involves applying a layer of underglaze to a bisque-fired piece, followed by a clear glaze on top. This protects the design and adds a glossy finish. Underglazing is popular for its versatility and ability to produce vibrant colors and detailed artwork on ceramics.