natriumdodecylbenzensulfonat

Natriumdodecylsulfat, also known as sodium lauryl sulfate (SLS), is a surfactant. Surfactants are compounds that lower the surface tension between two liquids, a gas and a liquid, or a liquid and a solid, which can act as detergents, wetting agents, emulsifiers, foaming agents, and dispersants. In the case of natriumdodecylsulfat, its primary function in many consumer products is as a cleansing and foaming agent.

It is an anionic surfactant, meaning it carries a negative charge. This property allows it to effectively lift dirt and oil from surfaces, making it a common ingredient in shampoos, toothpastes, body washes, and laundry detergents. The foaming action it provides is often associated with a sense of cleanliness by consumers.

While widely used, natriumdodecylsulfat has also been the subject of some controversy. Some individuals report skin irritation or dryness upon contact, leading to its exclusion from certain "sulfate-free" cosmetic formulations. However, regulatory bodies generally consider it safe for use at the concentrations typically found in consumer products. Its biodegradability is also a factor considered in its environmental impact.