Use the wooden spoon that comes with your mask to mix clay with a small amount of water or other liquid in non-metal cup. The reason we use non-metal materials is so the clay will not fill up with the metals as the impurity.
The liquid you choose to mix with your clay can be warm water, yogurt, apple cider vinegar, honey, tea, etc.
Fully mix to a thick soupy texture (without lumps) and apply with fingers or back of spoon, massaging as you apply.
Apply to the face, avoiding eyes and mouth, and let dry. Rinse with warm water.