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.
Notes
To use a peppermint tea bag:Empty the contents of a tea bag into a small bowl. Sprinkle the herbs into the sugar scrub. You can choose as much or as little you would like to add, keeping in mind that adding more herbs can make the scrub more abrasive.