Combine shea butter and sunflower oil and melt in a double boiler.
Mix arrowroot powder with carrier oil (optional).
Once melted, remove the heat and let it cool down to 40º (113ºF). You can speed this up by placing the container in the fridge or freezer.
Add the essential oils.
Cool the mixture until it starts to solidify. You can speed this up by placing the container in the fridge or freezer and stirring occasionally.
Whip with an electric whisk. If it gets soft or liquid during whipping, cool down some more.
Continue with the process of cooling and whisking until you get your desired consistency.
Scoop into the desired packaging.