Salex Saline Nasal Sprays (0.72% saline concentration) are safe, non-addictive saline nasal sprays. Salex Saline is safe for continuous use over long-term periods. The very basis of using saline is that it loosens and removes any excess mucus from the nasal passages. It also helps to keep the nasal mucosa hydrated and working as it should. Moist nasal mucosa is the body’s own way of keeping allergens, bacteria, etc. from infecting the body. Everyday nasal hygiene is the start of good health.