1. Material: PVC, water, food coloring 2. Uses: hot compress, icing 3. Mask size: 21 x 9 cm/8.26" x 7.48", (unfolded) 68 x 20 cm/26.78" x 7.87" 4. Skin type: General 5. Applicable personnel: general   Specifications: 1.Cold compress: put it into the refrigerator, after pre-cooling treatment (4-10 degrees refrigeration) for two hours or frozen for half an hour, you can wear it on the face. (It can be stored in the refrigerator for a long time. In order to prevent tainting by odor, it is best to put it in a cool bag.) 2.Hot compress: put it into warm water of 60℃ for about 5 minutes or in the microwave for 30 seconds, then heat the other side for 15 seconds, you can wear it on the face. (It is usually recommended to heat in water and heat it evenly.) Package Included: 1/2/3/4/5/10/15Pcs*mask Notes: 1. No matter it is cold compress or hot compress, the temperature should not be too high or too low, and the time should not be too long. 2.. The mask can be reused. The inside of the product is a kind of polymer gel which is non-toxic, harmless and tasteless.