Cleaning. Clean iPad immediately if it comes in contact with anything that may cause stains or other damage—for example, dirt or sand, ink, makeup, soap, detergent, acids or acidic foods, and lotions. To clean:
Disconnect all cables, then do one of the following to turn off iPad:
On an iPad with a Home button: Press and hold the top button until the slider appears, then drag the slider.
On other iPad models: Simultaneously press and hold the top button and either volume button until the sliders appear, then drag the top slider.
All models: Go to Settings Keeping iPhone, iPad, and iPod touch within acceptable operating temperatures.