This product adopts advanced self-heating temperature control technology. Once the package is opened, the eye mask gradually releases heat upon contact with air. The temperature and heating duration of the mask may vary depending on the usage environment, which is a normal physical phenomenon. Each mask can provide continuous warmth for 15–20 minutes. Regular use helps relieve dryness and discomfort in the eyes caused by overwork, study, or excessive eye strain, allowing your eyes to fully enjoy the soothing SPA-like experience. With its user-friendly thin-sheet design, soft fabric texture, and snug fit around the eyes, it delivers gentle warmth and comfort to the skin. Whether during study, work, rest, or travel, it offers effective protection and relaxation for your eyes.