Yes, you can clean glue from screen without damage
I'm a middle school teacher. That may help to explain this post.
Yesterday, a vengeful student put a glob of gorilla glue on my macbook air screen. I got most of it removed with a nearby bottle of clear hand sanitizer, which is mostly ethyl alcohol. However, a grey blotch was left on the screen.
After panic, tears, and pressing charges, I decided that I had little to lose, and much to gain, if the hand sanitizer would do its magic gorilla-glue dissolving trick again.
I propped the macbook so that the screen was flat on the table, face up. Then I saturated the dirty spot with the clear (ethyl alcohol) hand sanitizer, and left it on for 30 seconds. I wiped it with soft tissue, and, voila!
Clean screen, no damage. Although I am still pressing charges. Anyway, wanted to share this tip with the community.
mj