The FDA at the moment only approves of the following seven synthetic food dyes: Red 3, Red 40, Blue 1, Blue 2, Yellow 5, Yellow 6 and Green 3. Several others have been banned over the years due to ...
People have been wearing blue jeans for centuries. Originally, the blue color came from a natural indigo dye. The dye was chosen for the way it interacted with cotton. When heated, most dyes ...