Stearic Acid

Stearic acid (C₁₈H₃₆O₂) is a common saturated fatty acid found in animal and vegetable fats (like cocoa butter), used in cosmetics for conditioning (shampoo, lotions), making soaps, candles, and as a processing aid in plastics and rubber; while generally safe, excessive intake may relate to inflammation, but topical use offers benefits like moisturization, forming protective barriers, and reducing skin irritation, though some studies are on animals.