Sterile. Preservative free in the eye with GenAqua. GenTeal Gel is a clear lubricant that liquefies in your eye to form a protective film. It contains GenAqua, a disappearing preservative that turns to water and oxygen upon contact with your eye. Long-lasting GenTeal Gel spreads quickly without leaving streaks or causing blurred vision like ointments. Just 1 or 2 applications daily provide soothing moisture relief for your dry eyes all day and all night. GenTeal provides a complete range of eye lubricants that are preservative free in the eye. No irritating preservatives to worry about!