Q: the screen is glass --so why can't Windex be used to clean it

I use Windex, diluted 1/2. Have for two years on three different MBPros, including a new Retina. Screens still look beautiful. Just don't let the liquid get into the keys or the bezel, obviously. The key is to avoid rubbing the screen with abrasives and let the cleaner do the work. I also wasn't able to scratch an iPhone screen with a sharp key, so Apple is doing something right with their glass specs.

Message was edited by: GeorgeSupport6411

Dell screens are plastic. Apple's are good glass. The instrustions are the same why?

iMac screens are glass, not hard plastic. This is from CNET's review of the new, thin iMac without optical drive. There is a atomic level anti-reflective coating. This is also in CNET's review. You might want to consider testing ammonia cleaners in a corner a few times first to cee if it causes hazing.

How dirty is your screen that water won't clean it?

A simple cloth that you have slightly dampened is enough to clean your keyboard, your mouse, your screen.

I subscribe to the theory of "why take the chance" -

What is the up side to spraying window cleaner on your screen?  Why would you do something possibly harmful when you can do something that you know will not harm your screen?

Plastic, glass, hybrid -- cheap coating, expensive coating, no coating at all -

who cares

A slightly damp cloth will clean your screen.  That's the only fact you need to know.