Used as a thickening agent and viscosity modifier in cosmetic formulations, particularly in creams, lotions, and makeup products. Provides a smooth, non-greasy feel and enhances product stability by improving emulsion consistency. Also functions as a film-forming agent in hair sprays and styling products, offering hold and humidity resistance without stiffness. Its water-insoluble nature makes it suitable for controlled release applications in topical drug delivery systems. Commonly found in waterproof cosmetics due to its water-repellent properties.