They're banned in other countries, but these 13 food ingredients are still allowed in the U.S.
10. Blue Dye 2 (Coloring Agent) -- Pet food and some cheeses contain Blue Dye 2 and other artificial coloring agents. Most of these are made from coal tar, which is also used to seal-coat industrial floors and kill off lice in head lice shampoos, according to the Caltons.
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