Physiodose Saline Solution 15 x 5ml – SterileRegardless of the season, your age or where you live, your body must fight off all kinds of external aggression. The nasal mucosa is a natural barrier that helps fight against infectious causes such as bacteria, viruses and pollution. Mucus and the impurities that it absorbs can stop it from working properly, leading to superinfection of the ENT (ear, nose & throat). Nasal hygiene is essential in order to prevent winter pathologies and allergies.