It had a normal matte screen (non glare). I wiped with a wet cloth and I also used dish washing liquid to remove oil and fingerprints. Everything was easily cleaned. I also wiped very hard to find out how much abuse the screen could take. I did not damage anything. These displays are much sturdier than anyone would think!
So just go ahead. Subconsciously I am sure I wanted to destroy this crapbox. But I didn't. In the end I had to throw it with force on a concrete floor. That finally did the job ;o).
Oh, yes, I have forgotten: this is america. Please shut down the computer, disconnect all cords, remove the battery, discharge yourself, and no warranty. You act on your own risk etc. pp.
Just wipe the screen with a damp (not dripping wet) cloth, then dry with the glass cloth, simple as that.
I also use the same cloth (there were two in the packet) for cleaning my camera lenses & specs as well.
Well worth the pound I spent on it.
I tried using isopropyl on a CRT back in the day and it took off some kind of coating that was on the monitor, and I've been afraid to do it again ever since.
(The screaming is important. It makes you look like a mad scientist.)
I've have good luck with a big micro-fiber lens-cleaning cloth dampened with a squirt of eyeglasses-cleaner. I've also heard that diluted isopropyl alcohol is a good choice. There are also cleaning fluids specifically intended for use on LCD screens.