Immediate and long-lasting relief from dry mouth with GUM HYDRAL Hydrating Spray! Dry mouth can occur when saliva production decreases. Saliva acts as a kind of barrier that prevents bacteria from entering the body through the mouth. In other words, it plays a vital role in protecting our general health and well-being. Therefore, dry mouth can lead to cavities, bad breath, dental plaque, ulcers, receding gums, or even tooth loss. Before your problems get worse, it is important that you use solutions such as GUM HYDRAL hydrating spray. It is compact, easy to use and perfect for use when you are away from home. It can be applied several times a day, repeating as necessary (without rinsing).