Have they invented spray off band-aids yet (details inside )?

Well, the problem with dissolving bandaids would be the dissolved bits getting into the wound. Bandages have to be changed.

They do have dissolving sutures, though.

As far as “sprayed-on” bandaids, Dermabond is fairly close. Not spray so much as squirt. It’s basically superglue.

There’s also New Skin, which is basically like a nail polish type stuff, but with anti-bacterials and stuff. It can be removed by applying more then quickly wiping it off. Or by using acetone. Or, like nail polish, it’ll just wear off on it’s own.

Warm running water will make taking a band-aid off much simpler. There are several companies that make a liquid bandage. One used to come in a spray but it didn’t work very well & didn’t stay on the market for very long. Most of the others have a brush so you paint the liquid bandage across the wound thereby sealing it. I actually prefer the liquid to the physical band-aid!!!