SinuCleanse Nasal Spray products were developed by a leading Ear Nose & Throat Physician as an all-natural way to safely & effectively relieve nasal congestion and sinus symptoms without the worry of harmful side-effects or drug interactions. Studies suggest that Nasal Washing regularly may reduce the duration and frequency of cold & flu symptoms and promote long term nasal health. Nasal Washing moisturizes dry nasal passages and aids in the removal of mucus and irritants such as dust particles, pollen, and other debris, keeping nasal passages clear and allowing you to breathe easier. The SinuCleanse Micro-Filtered Nasal Wash system is a revolutionary new product that makes receiving the proven benefits of Nasal Washing easier than ever. The SinuCleanse All-Natural Pharmaceutical Grade Pre-Mixed Saline Packets within are made in the USA in an FDA Registered Drug Facility. Each packet contains all-natural, preservative free, ultra-fine salt granules which when mixed with water dissolve instantly to form a buffered salt water solution that will not sting or burn. They may be used to form an Isotonic or Hypertonic Solution. (See instruction sheet inside box for more information).