Your supposed to leave it on for like a couple of days or until it works I think. I caught my chick early like 3 hours old so I left it on for a day and then the chick was fine walking around like the rest of them. Be prepared I heard that this can take a while to fix.
I had this happen to one of my chicks this year. I caught it early though ( about 6 hours old) made a tape brace for it and it is fine now. Hope this helps.