Barium is another auxiliary drier which is used in conjunction with other driers to improve their performance. Although it exhibits poor performance  when used on its own, it promotes the activity of through drier. As it is adsorbed by the drier adsorbing pigments, it serves as an excellent wetting and dispersing agent especially at severe weather conditions. The paints with barium as auxiliary driers show better gloss and minimized loss-of-dry. Barium driers are used in conjunction with surface driers such as cobalt and manganese.