Corns on the feet are caused by too much pressure on that area the location where the corn is. To remove corns, all you need to do is take away that pressure that caused it. Its that easy. A corn or a callus is part of a natural activity which the skin undergoes to protect itself. Anytime there may be too much pressure on an area of skin, the skin thickens up to guard itself. However, in the event that pressure persists over a extended period of time, then the skin becomes so thick that it can be painful. If that pressure is spread over a broader area of skin, then that is termed as a callus. If that pressure is over a lesser more focal area of skin, then that could be a corn. The sources of that increased pressure may be a variety of things such as a hammer toe, a bunion or a deformed joint. A good diagnosis is usually needed to identify just exactly what it is that causes that higher pressure and how easy it is to reduce that higher pressure.
To eliminate corns, you will have to get rid of the reason for them. A competent podiatrist can readily get rid of a callus and corn by properly debriding it using a scalpel. Nonetheless, that corn will return should the cause is not removed. They do not keep returning because the podiatrist failed to eliminate it thoroughly or for the reason that corn has roots (they don’t). They keep returning because the pressure that caused them is still there. That must be eliminated if the corns is to be prevented from coming back. The way in which that pressure is removed will depend on why you have the higher pressure. It might be as simple as getting a better fitting pair of footwear or it can be as complex as needing some surgery to correct the toe deformity that is causing the pressure resulting in the corn.