Add all of the ingredients except essential oils to the top of the double boiler or heat safe glass bowl on top of a pot. Heat the ingredients over medium heat until melted, stirring ocassionally.
Remove from heat and stir in the essential oils.
Pour the mixture into the lotion bar tube.
Let cool for several hours or overnight in the fridge.
Notes
Cooling in the fridge speeds up the cooling time but it also helps the shea butter to stay smooth after cooling.