"Cold use: put the eye mask in the refrigerator to be cooled for an hour before using, or put it in the freezer when urgent. It must be worn on the eye when used. Warm use: put the eye mask in hot water, you should not put it in the microwave immediately, in case of the explosion. Target: This product can improve ocular microcirculation, eliminate fatigue, resume the plasticity of the ciliary muscle, prevent vision decline, so it has an efficacy of lightning eye and refreshing brain. Relieve