I'm not sure what would be causing you to just now be irritated with it. If it hadn't just happened I'd say you were allergic to it but because you've used it for 9 months I'm completely stumped!
I've heard tons of good reviews from different make-up forums and communities on Livejournal so I'm going to recommend it to you:
Urban Decay Eyeshadow Primer Potion
You can check out the ingredients it has by going here:
Primer Potion Ingredients
Just click on the ingredients tab if it doesn't automatically come up! Hope this helps some!