Pontacyl Carmine 2B is a versatile dye primarily used as a biological stain in microscopy and histology. It is particularly effective in staining cytoplasm and connective tissues, providing clear differentiation under a microscope. In the textile industry, it is employed for coloring fabrics such as cotton, silk, and wool, offering vibrant and durable red or pink shades. Additionally, it finds application in the paper and leather industries for producing colored products, enhancing their aesthetic appeal and quality. It is also used in the cosmetic industry for formulating products like lipsticks and blushes. In laboratory settings, it can serve as a chemical indicator. Its stability and intense coloration make it a versatile choice across various fields.