Visine A.C. Itchy Eye Relief Astringent Eye Drops provide temporary relief from itchy, red and watery eyes. Backed by 60 years of science and expertise, these eye drops are uniquely formulated with .25% zinc sulfate astringent as well as .05% tetrahydrozoline hydrochloride, the same active ingredient used in Visine Red Eye Comfort to help relieve red eyes. The small 0.5-fluid ounce bottle slips easily into a purse, pocket, backpack or desk for relief anywhere, even on the go. Visine A.C. Itchy Eye Relief Eye Drops provide effective, multi-symptom relief of itchy, red, watery eyes.