It's always been difficult for me to find a good mascara because my eyelashes are quite short. Besides I've been really keen on finding products without any unnecessary chemicals like the Body Shop and Jane Iredale, but they just didn't have the effect that I wished for - so I kind of gave up on that. Last year I finally found one that worked for me!
It extents your eyelashes like crazy without them getting clumpy.
Here's a link to it:
Max Factor False Lash Effect Mascara
I know different mascara works on different people, but I can definitely recommend it!!