Sodium 3-hydroxypropane-1-sulphonate is a chemical compound with the molecular formula C3H7NaO4S. It is also known as sodium 3-hydroxypropane-1-sulfonate or sodium 3-hydroxypropyl sulfonate. This compound is a surfactant and is commonly used in cosmetic and personal care products as a foaming agent and emulsifier. It functions by reducing the surface tension of water, allowing it to spread more easily and form stable foams. Sodium 3-hydroxypropane-1-sulphonate is also utilized in various industrial applications, including as a wetting agent in textile processing, as a detergent in cleaning products, and as a stabilizer in photographic films.