I found a product that's really good for the feet.

It's Earth Therapeutics' Tea Tree Oil Foot Repair Balm. I've been using it for almost 3 weeks and now, my feet are all nice and smooth. A couple of years ago, I developed these unsightly cracks at the ball of my foot, and now they're almost gone. But then again, it could be because I don't walk barefoot around the house anymore. It's one of Fly Lady's thing, to wear shoes around the house. Something to do with if you have shoes on, you tend to be professional or something.