One of the most common formulations used in Bag on Valve (BoV) is saline and seawater solutions nasal cleansing due to it’s effectiveness, versatility and convenience to the user. The BoV technology allows the saline or seawater solution to remain separate from the propellant at all times, maintaining the integrity of the product.
A mist of saline/seawater solution is delivered to help moisturize dry or irritated nostrils. They can also relieve nasal congestion and remove airborne irritants such as pollen, dust etc. thereby providing sinus allergy relief.
The solution can be either isotonic or hypertonic. Isotonic solutions have the same salt concentration as the human body whereas hypertonic solutions have a higher salt content. Hypertonic solutions may be more useful at drawing moisture from the mucus membrane and relieving nasal congestion.