It's not the type of lens (I've tried 'em all). Nope, it's a very sexy problem in which my eyes overproduce protein and don't self-clean as effectively as they should, leading to blurry, fogged-up lenses and red, irritated eyes. (There's no medical term for excessive protein build-up, which is unfortunate, because I'd join that support group in a heartbeat.) And so I rub my eyes constantly, and I remove my contact lenses for cleaning every few hours. Suffice to say, all this eye action leads to my concealer, eyeliner, shadow, and mascara disappearing by 5 p.m.