Washing powder is a cleaning agent used for laundry. It typically contains a mixture of surfactants, enzymes, and other chemicals that help remove dirt and stains from fabrics. Washing powders are available in various formulations, including those designed for specific washing machines or water types. Most washing powders can be used in both hot and cold water, making them versatile for different laundry needs. They come in various scents and can be found in both powder and liquid forms. Popular brands include Tide, Persil, and Arm & Hammer.