What Is Hylo-Night? Hylo-Night is a sterile, preservative free, vitamin A eye ointment that contains 250 IU/g retinol palmitate, liquid paraffin, light liquid paraffin, wool fat and white soft paraffin. Has the addition of Vitamin A which has been shown to improve symptoms of blurred vision and tear film stability in dry eyes. Preservative free, phosphate free and therefore very well tolerated Very cost effective with 300 applications in one 5g tube Excellent duration of action offering at least 6 hours of comfort. How to use Hylo-Night Apply a small strand of Hylo-Night into the lower eyelid every day before going to bed. Do not allow the tip of the tube to touch the eye. Hylo-Night should not be used while wearing contact lenses. Take out your lenses before using Hylo-Night and wait for at least 15 minutes after treatment before putting them back in. Always Read The Patient Information Leaflet Before Use