Wart Remover

If you’d have been there, you’d be deaf now. It was that big of an explosion. Mad Max came out of the lab coughing up smoke and looking like the stereotype blackened cartoon character.
“Whoo-eee!” he laughed. “Wrong ingredient. Wonder if I could sell this to the U.S. Military?”
Plaster was still falling from the ceiling. A couple of devils appeared to see if Max had gotten himself dead, and therefore would be able to collect on the traditional wizard bargain.
They had no idea just how mad Mad Max really was. He’d probably promised his soul to 10,000 devils in his time, and he wasn’t done yet.
“Help you boys?” Max asked fanning the smoke away with large sweeping gestures.
“Just checking, Max.”
“Well, go check somewhere else.”
They were off post haste because they knew that both of them together were no match for Mad Max.
Max summoned some condo-cleaners to help him fix up his lab. These guys had seen everything, even before they met Max. Two days later Max was back in business. Even with magic it still took two days; it was one honker explosion.
This time things went according to plan: fast-acting-topical-wart-remover, and it tasted good, too. You could use it as a non-carcinogenic sugar substitute. You could also use it as window cleaner, and it would fuel most internal combustion engines and (as an added bonus) it was fully biodegradable.
“This time, I’m gonna be rich! Rich, I tell ya.” He said to nobody there.
He danced a little jig. He had forgotten he was already wealthy beyond measure of mortal men. Max had invented fire, and collected royalties for the first 400,000 years.