Kao MegRhythm Steam Eye Mask Mugwort is a self-heating eye mask designed to help you relax with gentle, soothing steam. Upon opening, the mask warms automatically to a comfortable temperature of around 40°C and releases steam for approximately 20 minutes, softly wrapping the eye area in warmth—similar to the calming sensation of a bath. It is easy and convenient to use anytime and anywhere, whether before bedtime, while relaxing at home, or during travel such as on an airplane. Infused with natural essential oils, the mask features a comforting mugwort scent that promotes relaxation and helps ease tension for a peaceful moment of rest.