When eyes are itchy, irritated, and showing symptoms of hayfever, preservatives usually contained in hayfever drops can often cause similar issues.Librachrom Hayfever relief (Sodium cromoglicate 2.0% w/v) eye drops are free from preservatives and are designed to relieve and treat the eye symptoms of hayfever. Presented in a multi-dose device, means there is less plastic waste when compared to single dose vials*, so they're good for the environment too.