Q: How do you get your eyeliner to not smudge or end up below the eye?
A: To be honest, after a long day, my eyeliner eventually does the same thing, but that's because after awhile I'll rub my eyes forgetting I have makeup on! LOL. I use Indelible Gel Eyeliner in "Black Out" from MadMinerals.org, I mentioned this before in my blog but thought id bring it back to the surface since I've been getting a lot of questions about eyeliners lately. It seriously is compared to MAC's Fluidline in "Blacktrack". They are both very similar, of course MAC has a larger jar and is actually a tad bit creamier than the Indelible Gel Eyeliner. Also, the Indelible Gel Eyeliner can dry out but can easily be "brought to life" with eyeliner sealant which is also available on MadMinerals.org, or I use my Homemade Mixing Medium to seal my liner so it stays on and is smudge free.
For you gals that are into the traditional pencil or liquid eyeliner, eyeliner smudges because your lids are producing OIL in which your lid is no longer holding onto your eyeliner like it should.
Try powdering your lids first, concentrating on your lashline and lower lashline as the powder will absorb the oil and lasting longer, I really like Revlon's Colorstay Pencil and Liquid Eyeliners, for those of you who are not allergic to MAC's Liquidlast, that one REALLY stays on! (My eyes were irritated when I tried it).