It's suppose to enhance the colors of your eyes with pigments of shine or something like that... For instance, blue eyes got blue mascara, green had reddish and hazel some brown-gold. You know what they put for brown eyes??? Black, black, black, because nothing makes your eyes pop like semi-shiny black mascara... Maybe it's because it's the waterproof formula or the bottle is old, but never opened.
Anywho, not my favorite mascara. I get the feeling that Covergirl doesn't put much effort in the waterproof version. Maybelinne still has my vote for waterproof mascara.