Isomar Allergies Spray's dual effect is made possible by the mix of substances that both soothe and moisturize the airways. It aids in avoiding and combating colds and allergy problems. The solution passes over the mucosa and, in addition to fluidizing and opening the closed nose, cleans it by removing bacteria and allergies. It has the same saline concentration as our bodily fluids (0.9% in NaCl).