To use the self - heating eye mask, first, find a quiet place to rest. Open the pouch, unfold the mask, and gently place it over your eyes, fitting the loops around your ears. In a couple of minutes, you'll feel the gentle warmth. Then, just relax for about 25 minutes. If using on children aged 5+, you might need to tie an extra knot to tighten the loops and always have adult supervision. Before use, don't bend or crush the mask. Keep it away from water and other liquids. Avoid using it while wearing contact lenses or right after using eye drops. It's recommended for users aged 5+. Keep it out of reach of young children, babies, and pets. Don't heat it in the microwave, cut or tear it, or use it if it's damaged. After use, recycle the product. If you feel any pain or discomfort, remove the mask. Rinse with warm water if there's irritation. Don't use it if you can't feel heat, have diabetes, or are recovering from recent eye surgery. Seek medical advice if you have skin issues around your eyes or sensitive skin.