Hi, i had corn on toes. i used a scholl corn pen which i think might of burnt it. it has now gone black and i dont know how to get rid of discolouration?

Leave it alone, the burned tissue will come off by itself with your daily hygiene task.

Getting rid of the corn will not resolve the problem. A shoe rubbing on a boney prominence cause the corn to form for protection. In time the corn becomes painful. Look for prominent seams inside the shoes. When buying be sure shoe is wide enough. Padding protects area but cause still present. Surgery is only method to resolve the problem