Homemade Ginger. It is really a great site. I'm wasting a ton of time there, no I am getting a ton of useful information there.
Anyways, this is super easy to make. Equal parts of brown sugar and sugar and then get it all wet with olive oil. It's not rocket science and that's a good thing.
Might I make a suggestion though, do not try this in the shower. Use this in the tub and scrub your feet LAST.
I have never felt so soft or spoiled after a bath in my life. EVER! I even ran the shower so it was nice and steamy in the tub. I felt like a brat.
And last but not least, wipe out the tub after your luxurious bath. Unless you are pissed at the next person in line. Then happy hunting.