First, wash your face thoroughly with warm water and mild soap or shampoo. This removes any previous masks or treatments you've done without washing your face first. Next, mix the clay with enough water to form a thin paste. You can add a few drops of your favorite essential oil if you'd like, but they are not necessary. Finally, apply the clay mixture to your face, avoiding the eyes and lips. Leave on for 30 minutes, then rinse off with clean water. If at any time during the process you feel any bits of clay on your skin, just wash it off immediately before applying moisturizer.