Clear up

All of their symptoms cleared up after the mold was removed.

With the new cleanser, his skin cleared up in two weeks.

His lung X-rays cleared up after they moved to Arizona.

Advise him to stay a little longer till the weather clears up.

Accepting that incidents will always happen, what then matters is how quickly we can clear up the mess, something British Rail was better at. [...] I would turn up as quickly as possible in the on-call Hillman Avenger and assess how quickly we could clear up.