Set up a double boiler by placing a heat-safe bowl over a saucepan filled with a few inches of water. Ensure the bottom of the bowl doesn't touch the water.
Add the mango butter and coconut oil to the bowl. Heat gently, stirring occasionally, until both are completely melted and well combined.
Remove the bowl from heat and let the mixture cool slightly for about 5 minutes.
Stir in the jojoba oil and mango essential oil until well incorporated.
Place the mixture in the refrigerator for 1-2 hours, or until it starts to solidify around the edges but is still soft in the center.
Remove from the refrigerator and whip the mixture using a whisk or electric hand mixer. Start on low speed and gradually increase to high. Whip for 5-10 minutes or until the butter becomes light, fluffy, and doubles in volume.
Transfer the whipped body butter to a clean, dry glass or ceramic container.
Store in a cool, dry place away from direct sunlight.