Place the brown sugar in the jar. Pour the oil over it, and add the remaining ingredients. Stir well.
Once your jar has been opened and is sitting on the side of your bathtub or shower, you might get a little water in it as you scoop the goop. If you do, the shelf life will be greatly diminished because once you add water into the mix, bacteria can breed. I recommend trying to scoop out of the jar as far away from the shower as you can. If it does get a little water in it, you should use it up within one month. If you keep it dry, it will last for six months.
*You can sterilize this by putting it through a hot wash in your dishwasher or dunking in a pot of just-boiled water for a few seconds.
Excerpted from Gorgeous for Good: A Simple 30-Day Program for Lasting Beauty — Inside and Out by Sophie Uliano. It is published by Hay House (April 7th, 2015) and is available for pre-order now with all major bookstores.