Separate 20 of the cubes from the block of soap base. Chop or grate the soap cubes into smaller pieces and place half them in a double boiler over medium heat.Stir frequently until the soap is completely melted.
Immediately, pour the melted “pink” soap into the heart-shaped molds, filling each mold only half way. It will harden within 2 minutes of pouring into the molds.