Wet a paper tissue or piece of kitchen roll under the cold tap.
Squeeze out the excess water. It should be wet, but not dripping.
Have a soft, fluffy cloth/towel handy.
Quickly wipe the wet tissue over the screen, then quickly buff it up with the cloth. 'Quickly' because if you let it dry on its own, it will probably dry streaky.
I agree with maidup. There is no need to use any "product" on screens. A barely damp microfibre cloth will clean it and leave it smear-free.
I have done this for two years and my screen is "as new".