RP from 07: anyone ever have an allergic reaction to eyeshadow?

I'm so worried...this has never happened to me before. I've been using the same eyeshadow since November or so when I went on my trial at MAC for my epics. When I went back to school in January after xmas break, I started noticing I'd wake up and my eyelids would be SO puffy. Then the skin began to dry up and get really red.

I am soooooo concerned. I changed my eyeshadow brushes and I'm still having a reaction......maybe I should just throw out the eyeshadow (man that stinks cuz it ain't cheap!) and buy something else and see how I react?

I was wondering if anyone has had this happen to them....thanks!