I don't use an eyeshadow primer; I want to buy one but I haven't got the chance to do it; however today I tried a little trick so my eyeshadow stays all day without creasing!
Here's what I did:
After I applied liquid foundation all over my face; and some concealer to cover my dark circles (hate them!!) I applied a little bit of a mid-tone concealer in my lids; after that I tapped with loose powder; I let it settle down; and it's time for the eyeshadow after this.
My little trick seemed to work with some low end e/s I'll be trying it this week with different looks to see if it keeps working =)
I don't have pics but I swear it worked! lol