Quick Overview The Rich Facial Dead Sea Mud Mask by Sea Of Spa is a fancy spa treatment you can have right in your own home. Harsh weather and toxins in the environment wreak havoc on delicate facial skin. A Dead Sea Mud Mask treatment is the perfect antidote. How to Use Appropriate for use by all skin types, for optimum results, use the mask 1-2 times a week and follow with a moisturizing cream. Apply an even layer of medium thickness to the face and neck (avoid the eye area), leave the mask to set for 10-20 minutes, until it becomes dry. Then peel off the mask and rinse the face thoroughly with water.