How to keep eyeliner from smudging?

Checked the memories but didn't exactly find what I'm looking for.

I want to know how to keep my eyeliner from smearing/smudging. I find that MAC Technakohl Liner and Revlon's Color Stay work best, but they still smudge after a few hours of wear on me. Anyone else have this problem?

Also I've tried liquid liner, but I always have a hard time getting it to go onto my skin dark enough.

Any help is much appreciated!