Spray drying is a method used to convert liquid solutions or suspensions into dry powder. In this process, the liquid is atomized into fine droplets and then exposed to hot air in a drying chamber. The heat evaporates the moisture quickly, leaving behind dry particles. This technique is commonly used in the food, pharmaceutical, and chemical industries to produce powdered products like instant coffee, milk powder, and various nutraceuticals. Spray drying is efficient and helps preserve the quality of sensitive materials by minimizing heat exposure during the drying process.