I bought an iPod Touch screen film, the kind that is clear and sticks because it is made of silicone. However, I let my friend use it and he has some really bad dandruff, the kind that makes it look as if you are covered with thick snow. Well, the stuff got all over the screen (he's not using it again) and for some weird reason, the danruff has somehow managed to glue itself to the screen protector film. I tried to rub it off, but it just sticks there. I mean, I can feel it and pick some of if off with a guitar pick, but the pressure needed to do so might damage the screen. I want to keep the screen film that I already have because it is rather expensive to replace and hard to stick on again. Any ideas?