citrus salt scrub: 1 cup sea salt, 1/4 cup oil (olive, almond, or coconut), 1/2 tsp lemon juice, 1/2 tsp lemon zest (optional). Mix oil a little at a time with the salt. Add the zest. Drizzle the lemon juice over the mixture, making sure not to get it watery. Store in an airtight container.