Combine the beeswax, tallow and shea butter in a microwaveable jug and heat for 30 seconds at a time in the microwave until the beeswax is completely melted. Stir in between each heat burst.
Remove from the heat and let it cool slightly before adding the next ingredients.
If using essential oils, add them to the carrier oil.
Stir the carrier oil into the beeswax mixture.
Whisk in the arrowroot powder and bentonite clay until the mixture is fully combined and smooth.
Pour into deodorant tubes and let sit until cooled down and it is solid.