On Jul. 12, 1960, the Color Additive Amendments of 1960 defined “color additive” and required that only color additives (except coal-tar hair dyes) listed as “suitable and safe” for a given use could be used in foods, drugs, cosmetics, and medical devices. The 1960 Amendments also contained a “Delaney Clause” that prohibited the listing of a color additive shown to be a carcinogen.