hydraSense Medium Stream Nasal Spray provides effective relief from nasal congestion due to colds, allergies, and upper respiratory tract infections. Its formulation of 100% natural-source, undiluted seawater flushes out excess mucus to help you breathe better. Clinically proven to alleviate nasal cold symptoms like obstruction and sinus pressure, this preservative-free solution is gentle enough for daily use by adults and children over two years old. Each spray contains a combination of more than 70 marine trace elements, offering a natural way to care for your nasal passages.