Fess Nasal Spray 75mlFESS Nasal Spray for effective colds and flu relief even when you're pregnant, on medication, or just sick of feeling blocked up. Because FESS is a non medicated, alkaline buffered saline spray, you can use it as frequently as you like. Regular use helps provide: Clears and soothes dry nasal passages Washes away the germs that cause colds Naturally thins mucus, so it flows away more easily Stimulates the nose's natural defence mechanism Warnings Can