About the product Lubricant Eyedrops With Antioxidant N-Acetylcarnosine, Soothing eyes against exposure to sun and wind etc Soothing eyedrops For temporary relief of minor eye irritations Ingredients: Active ingredients Glycerine (lubricant) 1%, Carboxymethylcellulose sodium (lubricant) 0.3%. Inactive ingredients: Sterile Water (ophthalmic grade solution pH 6.3 to 6.5). Antioxidants: N-Acetyl-Carnosine (NAC)* 1%. Buffers: Borate, Potassium Bicarbonate. Preservative: Purified Benzyl Alcohol Each 5ml bottle should last 30 days at two drops per day or 15 days at four drops per day, A box contains 2 x 5ml bottles; therefore each package can last between 30 and 60 days which represents excellent value for money 100% hypoallergenic and 100% Sterile, Free of animal ingredients and may be freely used by vegetarians