Fluorescent Brightener 28 is widely used in the textile industry to enhance the whiteness and brightness of fabrics. It is applied during the manufacturing process of synthetic fibers, such as polyester and nylon, to make them appear more vibrant and visually appealing. Additionally, it is used in laundry detergents and fabric softeners to maintain the brightness of white clothes and prevent them from yellowing over time. In the paper industry, it is added to paper products, including printing paper and packaging materials, to improve their whiteness and make printed colors appear more vivid. It is also utilized in plastics and coatings to achieve a brighter, cleaner appearance in finished products.