Melt the coconut oil. In a small saucepan, melt the coconut oil over low heat, or microwave it in a microwave-safe bowl at 50% power for about 45 seconds. Then, melt just until liquid, avoiding overheating.
Add the avocado oil. Remove the coconut oil from the heat and stir in the avocado oil until well combined.
Mix in the sugar. Gradually add the sugar to the oil mixture, stirring continuously. Mix until the sugar is fully coated and the texture becomes crumbly.
Add the essential oil. Stir in your citrus essential oil (about 20 drops) and mix until evenly distributed throughout the scrub.
Transfer to a container. Pour the mixture into a clean, airtight jar or container. The scrub will keep for up to 6 months at room temperature.