Set the coconut oil out in a warm place so that it softens but does not completely melt. Look for the consistency of softened butter for baking.
In a bowl, cream together the sugar and the coconut oil.
Stir in the peppermint leaves (fresh or dried), peppermint essential oil, and optional spirulina powder.
To store (or for gift giving), scoop the sugar scrub into a nice jar with a lid.