Urban Decay Eyeshadow Primer Potion

Before, I didn't really see the need for eyeshadow primers. You see, I bought the Smashbox eyeshadow/lip primer before and it did nothing, absolutely nothing, for me- except maybe reduced the redness of my eyes so then the color appears better. But I can achieve that with a little application of my YSL Touche Elcat. Nevertheless, being the beauty addict that I am, the other day I got the Urban