We have to get a regulation passed that any of these sorts of additives need to be clearly labeled here...
They evade that by calling it “natural”.
After my daughter started reacting to some foods, particularly very, very dark chocolate, I did some research and found out that there’s a red food color called carmine that is used that way. It’s made from insect shells but is often listed just as “natural” food color.
Not only can it be an issue for allergies, apparently for those who eat kosher it can be a problem, as it is not a kosher product.