First, make sure your hands are clean before taking the mask to avoid contaminating the product. When applying the mask, it should evenly cover the face with an appropriate thickness. If skin discomfort such as stinging or redness occurs during use, stop using it immediately and wash your face with clean water. Consult a professional dermatologist if necessary. In addition, the mask should be stored in a cool and dry place, away from direct sunlight and high temperature environments to prevent the product from deteriorating.