... smoke suppressant in plastics, a reinforcing agent in neoprene rubber, a drying agent, a laxative to loosen the bowels, and color retention in foods. In addition, high ... referred to as 'chalk', is used as a drying agent for hands in rock climbing, gymnastics, and weight lifting.Magnesium ... the skull to give it a white finish.Magnesium Carbonate Hydroxide is used as a clay in face masks, it has mild ...