Although this mascara has been out for a really long time, I don't think I have found any better.
I have been through every type of mascara available, from Lancome Hypnose, Dior Diorshow mascara, and recently have tried the new Maybelline Falsies.

However I cannot fault this mascara, it really does work wonders without breaking the bank. It comes in a double ended stick, one end containing the white serum, whilst the other contains the black extending mascara. When I first started using it, I used to use both ends, so applying the white serum, and then the black as instructed. However, I found that I had a far better result without using the white serum at all, and just using the black.

I have average length lashes so I'm forever trying to extend them into little butterflies, and I truly believe this mascara is one of the best out there (even better than Hypnose) provided you don't use the white end! Sounds bizarre, but thats my experience anyway. I do get compliments from people that my eyelashes are long (I use this baby every day though). I usually use quite a few layers (5+) as I really like to extend my lashes, and I find that it doesn't get clumpy or look ridiculous. It also stays all day.