To a double boiler, or a metal bowl that fits on top of a small saucepan of water, add the tallow, beeswax, and coconut oil. Place the double boiler or pan over medium heat. Slowly melt the mixture, whisking occasionally until it is completely translucent.
Remove it from the heat and stir in arrowroot powder, bentonite clay, and witch hazel. Whisk to combine.
Return to the heat and whisk just until smooth.
Remove from heat and whisk in the vitamin E oil. It isn’t required, but I like to use a hand blender to ensure that there are no clumps.
Continue to whisk the mixture until it cools to the point where you can comfortably put your finger in it. Whisk or blend in your essential oils.
Pour the mixture into an empty deodorant tube or a small jar and place it in the refrigerator until it solidifies. Once it is solid, you can take it out and store it at room temperature.