Chop or grate beeswax, or measure out beeswax pastilles. Place wax, butter and oils in the top of a double boiler or bain marie and gently heat until melted, stirring occasionally. Remove from heat and stir in essential oils, if using. Add vitamin E and stir again to blend. Immediately pour the mixture into clean 1 ounce tins or empty lip balm tubes. Let cool for several hours or overnight before capping. Label your creations and store in a cool place.