Start by heating water in the lower part of your double boiler over low heat (or saucepan & mixing bowl).
Measure coconut oil, olive oil, and mango butter into double boiler. Continue to melt mango butter over low heat until completely melted.
Remove from heat and let cool slightly. Add in arrowroot powder and whisk to combine.
Pour oil mixture into mixing bowl and place bowl in freezer to allow it to set up. You will know it's ready when you press a finger into the mixture, and it holds an indent - mine usually takes about 30 minutes to set.
Add in essential oils if using. With your electric mixer, whip the ingredients together until you have a light and airy homemade body butter. Should take about 2 minutes.
The finished product of this homemade body butter is very rich and nourishing. A small amount goes a long way, so use sparingly.