BLUE DYE NO. 1
Though it’s been banned in Austria, Belgium, Denmark, France, Germany, Greece, Italy, Spain, Sweden, and Switzerland, this food colorant is often found in U.S. ice cream, cereals, canned processed peas, packet soups, bottled food colorings, icings, and in the liquor blue curacao. Research has connected Blue No. 1, which is also called Brilliant Blue with allergies, hyperactivity, learning problems, aggressiveness and irritability in children. To ban it from your kitchen, keep an eye on ingredient lists. If you see Blue No. 1, move on.
Related: Food Dyes: A Rainbow of Risks