This hayfever nasal spray cleanses the nasal passages of pollen and other allergens, house or animal dust. It is a medical device in an isotonic solution containing seven tropical herbs. Luffa Nasal Spray works by rinsing and cleansing the nose of hayfever-causing allergens. It also restores fluid and moisture in the nasal passages, making the nose feel soothed and more comfortable. Also suitable in protecting against allergic rhinitis. Can be used with other hayfever remedies. No restriction on use with asthma. Suitable for children over the age of 6. No preservatives