I now have confirmed an allergy to food coloring, myself. I've had excema, on and off, for several years. Last year, I bought some of that Crystal light junk with food coloring in it, for myself. Had terrible excema all over my neck and face and terrible itchiness along the back of my scalp. I hadn't realized it was the food coloring until a few months ago, when I made myself some again and it came back. Today, stupidly, I decided to open up a small...and I mean small bag of peanut M&Ms from my kids candy bowl from Halloween. Ugh....I have hives all over my neck, back, scalp and face. I guess that will be my last bag of M&Ms. 2 allergy pills later and I'm still quite itchy. Pffft!