A good gel or liquid to remove calluses from feet?

The drugstore callus removers are too mild. I went for a pedicure and they used a gel that really made it easy to file away the tough skin. Have you used a good one?

I already use a pumice stone and an exfoliating lotion.

Erin2013-08-08T14:23:18Z

Use 1/4 of Listerine, 1/4 of vinegar, and 1/2 cup of water. Mix it together and soak your feet for 15 minutes and the dead skin will wipe off. I did this and my feet were so smooth and nice afterwards!