Mascara.

Mascaras are so hard to shop for.  You need to actually test them out and really just like the one that gives you the look you want and are looking for.  Some offer thickness or length, while others offer no clumping or smudgeproof.  For the past couple of years I have been using Benefits Bad Gal Lash. 

I love the softness and smooth glide, also how long it lasts compared to others. But for the price you pay for it, it should last. I have also posted a few others that some of my friends swear by!