To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
His nasal rinse, as simple as it is, is a lifesaver in cold and flu season! Once you get the hang of it you'll get addicted to the relief that you get from upper respiratory infections by using this rinse.