had castor oil on my hands and thought I got it off good enough but the stuffs pretty thick. Anyway, there are light smears of it on my screen from my fingers when opening and closing it. Nothing that bugs me when its on, but when its off and black I can notice the little smears. So what would be the easiest way to clean your screen, without scratching it and VERY lightly scrubbing to get rid of the smears. Would it safe to use a little bit of water? The idea of doing that even scares me. Id power it down completely then very light just dampen something and wipe the screen? But I dunno if that would work even, might just smear it more. Takes soap when washing it off your hands, water doesn't work at all on castor oil.