Corns on the feet result from an excessive amount of pressure on that location where the corn is. To remove corns, all you have to do is take away that pressure that caused it. Its that easy. A corn or a callus is part of a normal process that the skin goes through to protect itself. When there may be too much pressure on an area of skin, the skin thickens up to guard itself. However, if that pressure persists over a longer period of time, then the skin becomes so thick that it can be painful. In the event that pressure is over a wider area of skin, then that is referred to as a callus. In the event that pressure is over a reduced much more focal location, then that is a corn. The sources of that greater pressure can be a variety of things like a claw toe, hallux valgus or a dropped metatarsal. A proper diagnosis is commonly necessary to establish just exactly what it is that is bringing about that increased pressure and how easy it will be to remove that increased pressure.
To eliminate corns permanently, you will need to remove the cause. A skilled podiatrist will be able to remove a callus and corn by properly debriding it with a scalpel. However, that corn will return if the cause is not eliminated. They just don't return for the reason that the podiatrist didn't remove it appropriately or for the reason that corn has roots (they don’t). They keep coming back for the reason that the pressure which caused them is still there. That must be eliminated if the corns is to be stopped from coming back. The way in which that pressure is removed would be determined by why you have the greater pressure. It could be as basic as getting a better fitting pair of shoes or perhaps it is as complicated as needing some surgery to take care of the toe deformity that may be causing the pressure causing the corn.