Artelac Nighttime Gel Artelac Nighttime Gel provides extra protection & relief throughout the night from dry, gritty, itchy & irritated eyes caused by chronic tear dysfunction. This can be due to a number of factors, including eyelid inflammation, eyelid deformities, blinking abnormalities & meibomian gland dysfunction, in which the lipid layer produced is too thin & breaks down. Artelac Nighttime Gel works like natural tears & has the same p H to seal in moisture for lasting relief, keeping your eyes hydrated & comfortable. Artelac Nighttime Gel contains: Lipids (triglycerides): To support the lipid layer of the tear film, which is criticial to seal in moisture. Sterilized water: To moisturise for your comfort Carbomer: To bind moisture to the eye's surface for continued relief. For best results, use Artelac Nighttime Gel at night & Artelac Rebalance during the day to provide 24 hour relief.