Enjoy lasting, all-day comfort. Active Ingredients: Polyethylene Glycol 400 0.4%; Propylene Glycol 0.3% Inactive Ingredients: Boric Acid; Calcium Chloride; Hydroxypropyl Guar; Magnesium Chloride; Polyquaternium-1 as a Preservative; Potassium Chloride; Purified Water; Sodium Chloride; Zinc Chloride; May Contain: Hydrochloride Acid and/or Sodium Hydroxide to Adjust pH Uses: For the temporary relief of burning and irritation due to dryness of the eye. Systane is scientifically formulated to shield eyes from dry eye discomfort so that eyes feel moist and refreshed longer. Feel its smooth, soothing shield work immediately. Finally, relief that lasts and lasts.