Tear the sachets along the dotted line to separate Step 1 and Step 2. Open the creamy black clay mask (Step 1) and spread it evenly over the forehead area. Rub the surface of the bag for Step 2 to mix the contents well. Take out and open the OTU bubble mask (Step 2). Apply the mask to a dry face, aligning it with the shape of the face. Apply the mask for 10 to 15 minutes until the oxygen bubbles rise enough. Remove the bubble sheet mask or rinse with lukewarm water. Warnings: Avoid applying to skin blemishes, pimples, irritated or sunburned skin. Stop use and consult a doctor if skin becomes red, swollen, or itchy during and after use. Avoid contact of the product with eyes. In case of contact with eyes, rinse with water. For external use only. Keep out of reach of children. Avoid use on skin sensitive to bandages, tapes or peel-off masks. Avoid storing under direct sunlight or high and low temperatures.