I opened it, but I haven't used it even once. [Brand New, Unused] Brown Rice Kairo (Warm Compress) Hot Eye Pillow A reusable kairo that can be used at home, every day, easily. It warms with steam, so it gently warms from the inside. Please use it on your eyes, abdomen, lower back, back, shoulders, or any other part of your body you like. Warming the area around the pubic bone during menstruation can relieve pain. In Eastern medicine, the eyes are said to be connected to the uterus. Eye fatigue is the source of women's ailments. 《Recommended for》 ・Those with eye strain ・For menstrual pain, sensitivity to cold, and recovery from fatigue before and after childbirth 《How to Use》 Heat in the microwave (500W for about 40 seconds) and place it on the area you want to warm, over clothing or a towel. It is especially recommended for use on the eyes. In the summer, you can cool it in the refrigerator and use it as a compress. Hot Eye Mask