Stearic acid is a saturated fatty acid commonly found in animal and plant fats. It has a long carbon chain, consisting of 18 carbon atoms, which makes it solid at room temperature. This fatty acid is often used in the production of soaps, cosmetics, and candles due to its ability to stabilize and thicken products. In addition to its industrial uses, stearic acid is also present in various food items, contributing to their texture and flavor. It can be derived from sources like cocoa butter and sheep fat, making it a versatile ingredient in both personal care and food industries.