Nature's Tears EyeMist soothes eye discomfort and naturally supplements lost tear film moisture. Safe and convenient, non-allergenic, contact lens-safe and preservative-free. Nature's Tears EyeMist is all-natural pH-correct EyeMist with ultra-fine water droplets between 5 and 150 microns in diameter, applied with a portable hand-held humidifying eye moisturizer. Perfect for patients who suffer from dry eye syndrome or keratoconjunctivitis sicca. Keep Nature's Tears EyeMist by your bedside for a nighttime re-wetting of your eyes to prevent cornea scratching. Take in your purse or carry in your car, Nature's Tears is there when you need it. Moisten your eyes with ultra-purified water instead of dumping chemicals into your most precious eyes.