What you will need:
Unscented, uncolored glycerine block or colored glycerine soap bars
Essential oils, for scent, if desired
Bay leaves, cinnamon sticks, or other herbs
Grease molds with oil. Heat the glycerine in the top of a double boiler over low flame until it melts.
Stir in a few drops of essential oil, if desired.
Using half the glycerine, pour into molds until half-full. Leave to set.
Place a bay leaf or another herb on top of the first layer of soap.
Reheat remaining soap in double boiler, stirring to prevent a skin from forming. Fill molds to top. Leave to set completely before removing the soap from mold.