12: Making Soap - Saponification (Experiment) - Chemistry ...
This will serve as a hardener for the liquid soap. Stir. Pour into chosen mold shape. Label with your names and lab section number. After pouring into the mold, the process will continue on its own. The soap will heat up and liquefy again, then cool off slowly, harden and dry. So, the soap must be left undisturbed for at least 12 hours.