Add the tallow, shea butter, cocoa butter, and jojoba oil to a heat-safe bowl. Set the bowl over a saucepan of gently simmering water and let everything melt slowly.
Once the mixture is fully melted, remove it from the heat. Whisk in the arrowroot powder until smooth.
Add the vitamin E and your essential oils if you are using them.
Transfer it to the refrigerator or freezer for a short time, just until partially firm. Let the mixture cool until it begins to thicken around the edges.
Using a hand mixer, whip the mixture until it becomes light and fluffy. Spoon the finished whipped body butter into clean jars.