You might think black eyeliner is black eyeliner, and it's not as important for it to be amazing as say, foundation might be - but as a makeup bag staple, that most of you wear every day, we think it's important to get a good one.

So what's good in a black eyeliner? It's got to be long-wearing (you don't want to be re-applying all day), non-flaky or runny (the panda eye look doesn't even work on Taylor Momsen), smudgable for the days you're feeling a bit Kate Moss and sharp and easy to control enough for when you're feeling more Dita von Tease.

We've listed our six favourite liners, across all formulas (gel, liquid, and pencil) so you know which passed the test (as as you can tell, I'm pretty demanding). Check out our faves above, and if you think we've missed a gem, tell us in the comments.