You can melt the base in a double boiler or the microwave. If you choose the microwave, make sure you cover the bowl you are melting the melt and pour (MP) with Saran Wrap to keep the excess moisture from evaporating out.
Melt down your soap and water in a double boiler method. Once your soap is melted stir through the remaining ingredients and add any scent or color, then pour the mix into your soap molds.
Using glycerine soap cubes and your favorite essential oil, spices, or other additions you can make fragrant gifts for friends and family. This is a page about making easy melt and pour gift soaps.