Stearic acid is used as a lubricating agent.It is used as a food additive.Used as in the production of detergents.It is widely used in cosmetics, soaps, and shampoos.Stearic Acid is a saturated long-chain fatty acid with an 18-carbon backbone. Stearic acid is found in various animal and plant fats, and is a major component of cocoa butter and shea butter.