From the iPad User Manual:
Cleaning Clean iPad immediately if it comes in contact with anything that may cause stains— such as dirt, ink, makeup, or lotions. To clean:
- Disconnect all cables and turn iPad off (press and hold the Sleep/Wake button, then slide the onscreen slider).
- Use a soft, lint-free cloth.
- Avoid getting moisture in openings.
- Don’t use cleaning products or compressed air.
The front of iPad is made of glass with a fingerprint-resistant oleophobic (oil repellant) coating. This coating wears over time with normal usage. Cleaning products and abrasive materials will further diminish the coating, and may scratch the glass. Abrasive media may also scratch iPad.
What's the best way to clean the screen?
The best way to clean the iPad is to use a lint free cloth or use MONSTER CLEAN TOUCH http://www.monstercable.com/mp3/ipod/screen_cleaner.asp . It's not very abrasive and doesn't wear the screens oleophobic coating. MONSTER CLEAN enchances the screens olephobic coating and won't harm the coating.
Due to our own legal purposes we do tell you to use this at your own risk. Apple will not be responsible if any thing SHOULD happen to your device
<Edited by Host>