Solspre Isotonic Nasal SpraySolspre Isotonic Nasal Spray is a saline (salt water) based nasal spray formulated to help maintain nasal hygiene, moisturise nasal passages, and ease nasal dryness, irritation, and mild congestion caused by common triggers like colds, allergies, dust, pollution, or dry environments. It contains sodium chloride (0. 9% w v) in a balanced (isotonic) saline solution thats compatible with body fluids.