I understand where you are coming from, but stand back for a minute and contemplate how ridiculous this sounds:

> don't be surprised if rubbing tap water on your glossy screen screws it up.

I used tap water to remove e-cigarette refill fluid (an oily substance) that I spilled on a non-Apple glossy screen, using a dirty rag. Unsurprisingly the screen is still absolutely perfect and handled the highly corrosive water just fine.

Apple's bullshit is getting to you.

Off topic but if there's oil in your e-liquid, you may want to find a new vendor. Should only be glycerine/glycol, nicotine, and miniscule amounts of flavor extracts/concentrates.

Just a mention : e-cig refill fluid is mostly propylene glycol and glycerol. It's not an oil. It's a sugar alcohol. :)

The main point is that it wound up on a screen and that screen is just fine. I didn't use mine for too long and didn't much research into it because it was merely a quitting aid :)

I've used water just once in tiny amounts and they appeared nontheless (long after using water).