Used extensively in the textile industry to enhance the whiteness of cotton, rayon, and other cellulosic fibers by absorbing ultraviolet light and emitting blue fluorescence, effectively counteracting yellowish tints. Commonly added during the bleaching or dyeing process to improve the visual brightness of fabrics. Also incorporated into laundry detergents to make clothes appear cleaner and brighter after washing. Applied in paper manufacturing to increase the optical brightness of printing and writing papers. Additionally found in some cosmetic formulations and coatings where a brightening effect is desired.