Some Halloween candy still includes carcinogen Red Dye 3, Consumer Reports warns. Here's a list.

As people stock up on Halloween candy this month, they may unknowingly be buying bags of treats with a hidden danger: Red Dye 3, a carcinogen that is banned in Europe and for use in cosmetics in the U.S., according to Consumer Reports. 

Some popular Halloween candy available in stores this year are manufactured using Red Dye 3, Consumer Reports said on Wednesday. The pigment, also known as Red Dye No. 3, has been shown to cause cancer in animals, and some studies have linked it and other artificial food dyes to hyperactivity and other neurobehavioral effects in children, the nonprofit consumer advocacy group said. 

The dye will be banned in California starting in 2027.