There is a list of stuff that is in it on the site that it's on.
I don't personally use it, thought I know from expierience, it you have alcohol on the keys, when you close the lid some of the alcohol may transfer onto the screen. I know this because it happened to my mum's powerbook...
I also used a product with alcohol on my iBooks screen before I knew that it was bad for it, so when using my iBook in sunlight, I can see this permanent wipe mark on the top half of my screen. I wish I could get it off, but as yet, I have found no solution.
b If anyone knows anything about taking off that smudge, I would be forever grateful to know about it.
Jeff