A composition provides an isotonic nasal irrigation solution with pH less than about 7.0. The composition may be formed of a salt and a pH buffer and may include an additive. The composition may be mixed with water to form the solution. The composition may aid in the treatment of various nasal or sinus disorders such as, for example, dryness, rhinitis, and sinusitis. The isotonic irrigation solution may also aid in the removal of contaminants from the sinus and nasal cavities such as blood, mucus, dirt, pollen, allergens, viruses, and bacterial. The composition may be liquid or dry.
