This product adopts advanced self-heating temperature control technology.
The oxygen in the air reacts with iron powder and activated carbon under the catalysis of brine to form a heating element, which releases water vapor and heat, so as to relieve eye fatigue, moisturize and strengthen. Eye blood circulation, the role of sleep, when using this product, will be different because of the use of ambient temperature and personal feelings.
When the ambient temperature is 23 °C, the heating time of this product is not less than 20 minutes, and the maximum temperature is not more than 60 °C. Please feel free to use it.