Indigo Carmine is a synthetic dye commonly used in various applications, including food coloring, pharmaceuticals, and medical diagnostics. It is known for its deep blue color and is often used to color products like candies and beverages. In medicine, it can be used as a dye in procedures such as cystoscopy to help visualize the urinary tract. In addition to its use in food and medicine, Indigo Carmine is also employed in laboratory settings for staining purposes. It is important to note that while it is generally considered safe, some individuals may experience allergic reactions. Always consult relevant guidelines when using products containing this dye.