Description: Heating principle: The steam heating eye mask contains a heating element containing iron powder and water. After opening the packaging bag, the enzyme in the air touches the heating element, and the iron powder in the heating element begins to ferment and generate heat. The moisture contained in the heating element evaporates this heat and then produces comfortable steam. Steps for usage: 1. Open the package and take out the eye mask: Take out the folded hot compress eye mask from the packaging bag, and then unfold it. When exposed to air, the eye mask will begin to heat up. Properly stretching the ear hook will release the elasticity of the ear hook, which is not tight and will be more comfortable to wear. 2. Wear it correctly: Touch your eyes with a white surface, and then hang the elastic band between your ears. 3. Enjoy the eye SPA: Please close your eyes during use and continue the heat for about 20-30 minutes. The temperature drop means the end of the use time. Specifications: Storage: Store in a cool place Product efficacy: People who use computers/mobile phones for work and study for a long time. Main ingredients: wormwood essential oil, non-woven fabric, iron powder, activated carbon, water absorbent resin, etc. Product category: eye protection Size:As pictures show(1 inch = 2.54cm) Color:Colorful Style：chamomile,Gulong,lavender,Grapefruit,Odorless Features： Use lightly elastic long-staple cotton, which will not strangle your ears after wearing it for a long time Constant output of perceptible steam, moisturizing and protecting eye muscles without hurting skin, start the journey of eye protection Herbal essences to care for eyes, constant temperature steam hot compress for delicate eye muscles without burning Package Included: 5pcs steam eye mask Note: Please be aware that due to your computer monitor display the color may have some difference between the picture and the real item. There is 2-3% difference according to manual measurement.