Ponceau SX is primarily used as a synthetic red dye in the food industry, where it is added to various products to enhance their visual appeal. It is commonly found in candies, desserts, and beverages, providing a vibrant red color that attracts consumers. Additionally, it is used in cosmetics, such as lipsticks and blushes, to achieve a consistent and appealing red hue. In the pharmaceutical industry, it is sometimes employed as a coloring agent in tablets and capsules to differentiate medications and improve patient compliance. Its stability and solubility make it a suitable choice for these applications. However, its use is regulated in many countries due to potential health concerns.