Salex Quatro Dynamic Nasal Spray/Rinse 50ml is a 4-in-1 solution that helps to offer immediate relief for nasal congestion. The saline cleans and rinses to remove excess mucus, the surfactant helps to break down cell walls, the xylitol has antiviral and antibacterial properties to enhance the saline effect, and the sorbitol reduces discomfort caused by nasal dryness.