First you need to grate the soap. I used hotel soap because I'm that cheap. But you can use any type to your liking! (:
Now grate all the soap you have!
Next add some good smelling body wash (: I prefer Bath & Bodyworks Black Amethyst
Add about a small palmful
Now add some water. Not much. As much at the amount of bodywash you put in
Now. Take the cup and place it in the microwave for 30 seconds
Now it's freezer time!! Plop it in the Freezer for a good 2-3 hours. It should freeze an you should have perfectly good soap! (: enjoy!