Creasy Greasy
If you have problems with your eyeshadow creasing midway thru the day, you need some MAC Paint. A little tube is $16.50 but will last you forever and a day. Put a little dab on your eyelids (and when I say a little I mean a VERY little- most of what I've used from my tubes has been from squirting out too much to begin with), let that dry, then put your eyeshadow on over it.
I have Bare Canvas and use it under every color. Get some to match your skin tone or to enhance any color of shadow you have. Works like a charm- by the end of the day your shadow will look as gorgeous as it did when you put in on.
Ooooh! I may have to pick this up!