I recently tried Estee Lauder's new Turbolash, the first battery powered mascara wand, and I am amazed at the incredible length, darkening and thickness this mascara adds to lashes.  I have naturally long lashes that are light brown in color.  This mascara takes them to new lengths and it lasts until I take it off.  No smudging and pretty water resistent but not water proof.  The secret is letting the wand do the work for you using a slower sweeping motion.  It's pricey stuff but worth it to me to get these false eye lash looking lashes.