Shiny new Macbook Pro -- can oils and sweat damage the screen? I have a brand-new Macbook Pro. As I'm almost certainly going to eventually spill something into the keyboard, I picked up a keyboard skin. It only took me a few hours to get used to typing with it; skins have come a long way since the last time I had one on a Mac.  

I'm noticing that there's now a faint residue left on the screen, possibly the sweat or oils from my fingertips and palms. (I notice that I lean on the edge of the skin as I type.) 

Is this anything that could eventually cause screen damage?
The screen is glass, so it's highly unlikely that sweat can damage it.