Red No. 40 is a chemical known as Allura Red AC (E129 in Europe) that is often used in products, such as chewing gum and frosting, to help dissolve the dye and prevent the colors from bleeding.

As mentioned above, there is some research to suggest that artificial food dyes could harm our health. As well as the rat study with Red Dye No. 3, which suggests a potential link with cancer, some ...