I like this waterproof eyeliner from Sephora, called the flashy liner. It's extremely smooth and easy to apply. You will fall in love with it easily. Moreover, it never smudge and is extremely long lasting. I've tried putting it on for as long as 12 hours and guess what it still stay on neatly.
Another good thing I like about this flashy liner is that it is not waxy and no worries for any funny smell. Sometimes, I even used it as my cayon eye shadow. It spread out very nicely with blending from your finger tips. Try it out.
It cost S$12/pc from any of their Singapore outlets. Net wt 0.04 oz.