I have very fine, light eyelashes that have no curl to them whatsoever. I've tried every mascara known to man and most of them I've found lacking. However, Dior's Diorshow mascara (I use waterproof) is fantastic! It truly thickens and lengthens my lashes and makes them look fabulous. I use an eyelash curler, as I do with every mascara, but even without, Diorshow really makes a difference! It does tend to clump if you get overzealous, but if you use normal amounts, it's pretty clump-free.