[Sidnicious]

Windex contains ammonia, according to Apple it's not safe to use on screens:

> Don't use window cleaners, household cleaners, aerosol sprays, solvents, ammonia, abrasives, or cleaners containing hydrogen peroxide to clean the display.

https://support.apple.com/en-us/ht204172

Stick with a damp cloth.

(I use 99% isopropyl alcohol to clean my computer, screen and all. It's notably absent from Apple's list of forbidden chemicals, but I'm not sure that it's safe so I won't recommend it.)

[qubitcoder]

I typically use isopropyl alcohol as well. Although I've periodically used Windex on my 2012 rMBP; no issues thus far, still looks brand new.

[coldwaraaron]

Thanks for the tip.