<b>Why Should You Choose This Graphene Heat Eye Mask?-----Enhances your sleeping quality and blood circulation around your eyes.</b><br> Graphene is a hexagonal planar heat-generating film composed of carbon atoms and has excellent thermal conductivity. Graphene heating film releases 6~14μm far infrared life light wave, more compatible with human body, heats in seconds to provide fast pain relief to aching muscles.<br> It's not only suitable for dry eyes, but for anyone who wants to have healthier eyes.<br> NOTE：It must preheating for 2 minutes before using it for a better experience.<br>