In electronics stores always sell “special” liquid to clean screens or gadgets, but against it is that they are usually very expensive and not worth spending on it as having other options that I’m going to comment now.
Mixing 70% isopropyl alcohol and 30% distilled water in a spray can get one of the best liquids to clean screens of the world. In the video below they will show the procedure:
According to our experience we advise to directly use the isopropyl alcohol pure without diluting with distilled water, and the liquid evaporates faster. We used it technically well and had no problem.
Note: Isopropyl alcohol you can buy in any electronic or drug house.