Dove Body Wash
My favourite soaps are the Dove soaps: bar for handwashing, liquid body wash in the shower. I need the moisturizing soaps or my skin would fall apart. The downside of a moisturizing bar soap is that it cracks and breaks apart while there is still 25% of the bar left. I hate to fiddle with little shards of soap so as soon as that happens I replace the bar.
Not wanting to waste perfectly good soap, I break the pieces as small as I can get them, pop them into an empty pump bottle that I have and just barely cover them with water. Leave this on a window sill for a few days, shake and voilà! Dove Body Wash. Just keep adding more shards as they become available.