How do you use it?
You use the white side first...the lash primer. Unless your lashes are thick and long naturally (and very few of us have those kind of lashes), put on the white primer like you would your normal mascara. 1-2 coats should be enough. Then use step 2, the black mascara and apply over your "primed" lashes, I usually use another 1-2 coats.
What's so big about it?
It won't smear, flake or run like normal mascara. It tubes your lashes, so when you get ready to remove it, it almost looks like your lashes are coming out...but they're not, it's just the tubed mascara. It takes light pressure and water to remove. I wouldn't say it's water-proof, unless your careful...more water resistant...but at least if you do happen to cry, it won't run or smear down your face or around your eyes!
Check it out, and let me know what you think!