Developed by the vision experts at ZEISS, these masks are gentle, easy and safe to use. Simply remove the mask from the sachet, and it immediately begins to self-heat, releasing warm moisture vapour to sooth and relax the eye area. The mask will reach a comfortable 41 degrees Celsius for at least 15 minutes before automatically cooling down. When to Use:- Before bedtime- When travelling- After computer work With regular use, ZEISS Warm Eye Masks will:- Enhance the eyes' natural defenses and moisture retention- Provide lasting relief from fatigue- Leave eyes looking refreshed and revitalised Product DescriptionProduct: Unscented warm eye maskMaterial: Adhesive bonded fabricComposition: Heating pack - ferrous powder, water, activated carbonDate of Production is stated at the bottom of the box in YYYY-MM-DD format (2025-01-18)Shelf Life: 3 Years Caution:- This is a single-use product, do not attempt to re-heat the mask following use.- Use immediately upon opening- If you have a pre-existing eye condition or diabetes, please consult your doctor.- If the masks breaks and contents enter your eye, rinse with water and consult your doctor- Remove contact lenses before using- Do not use eye drops for 20 minutes before and after use.- Keep away from children. Store away from high temperatures or direct sunlight.- Please read the full list on the packaging before using.