Luckily I'm not allergic, but the nasal douche learned after a nose job (gekrummte nasal septum) estimate to moisten the nose and clean. Also for colds very helpful, it sometimes also flushes mucus that does not dissolve the tongs. The application is very simple, the solution is sufficient for many applications. Rinse thoroughly after use and always let it dry, then you have also long what of the nasal douche.
