Fluorescent brightener 378 is widely used in the textile industry to enhance the brightness and whiteness of fabrics. It is applied during the manufacturing process of synthetic fibers, such as polyester and nylon, to give them a visually appealing, vibrant appearance. This chemical is also utilized in laundry detergents to make white clothes appear brighter and to maintain the color intensity of colored fabrics after repeated washing. Additionally, it finds application in the paper industry to improve the whiteness and brightness of paper products, making them more attractive for printing and packaging. In the plastics industry, it is incorporated into polymers to produce items with a cleaner, whiter look, such as plastic containers and films. Its ability to absorb ultraviolet light and emit blue light makes it a valuable additive in various industries aiming to achieve a bright and fresh visual effect.