I am truly amazed that this mascara doesn't smudge on me at all. I've always worn waterproof mascara because non-wp smudges on me. Actually, even most wp ones do too, with the exception of Anna Sui ...
This is by far the worst 'waterproof' mascara I've ever used. Halfway through the day it was smudged under my eyes. For the price and the brand, I expected much better. I won't be buying it again.