Hydr Eye Drops come in a convenient pack of 30 single-use vials, with each vial containing 0.4ml of sterile lubricating eye drops. These preservative-free drops provide soothing relief for dry, irritated eyes while maintaining optimal eye moisture. The single-use vial format ensures sterility with each application and eliminates the need for preservatives that could cause sensitivity. Each vial should be discarded after use. The 30-vial pack offers approximately one month's supply when used as directed. Store at room temperature and protect from direct sunlight.