Wart on bottom of my foot. Completely?

Hi, I have this hard thing on the bottom of my feet which was causing a lot of pain while walking. On consulting the doctor I was told that it was a wart and it can grow. I was asked to apply 2 coats of the medicine Duofilm on the wart in the night after soaking the foot in warm water for 10mims and removing it with a brush in the morning. I had been following this but since I thought that it's growing I applied it on nearby areas as well. But yesterday when I soaked my feet the whole area's skin started peeling from the sides. Not knowing what to do I peeled the whole thing off by myself. It was not a very painful process But the wart is still there.      I want to know that is peeling of skin normal with this medicine? And is this a sign of my wart healing? And how long will it take it get rid of the wart completely? Thanks