Sodium dodecyl sulfate is widely used as a surfactant in cleaning and hygiene products. It is a key ingredient in shampoos, toothpastes, and soaps, where it helps to create foam and remove dirt and oils from surfaces. In laboratories, it is commonly used in the process of protein separation during gel electrophoresis, where it denatures proteins and gives them a uniform negative charge, allowing for separation based on size. Additionally, it is employed in industrial cleaning agents and detergents for its ability to break down grease and grime effectively. Its emulsifying properties also make it useful in the formulation of various cosmetic and personal care products.