Try using apple cider vinegar. You can use bread crumbs to form a paste to put on it and wrap it overnight. Repeat the process each night till it goes away.
It's been there for several months though, since summer. It's also on the bottom of my foot so it's hurting and affecting how I walk.
aww. im sorry. i really am. I had a blister under my foot. I couldnt walk so i had to crawl. lol
My only advice would be wait and let it go away.