Nose hygiene. Biolane physiological serum is used daily for cleaning your baby's nose often clogged by many. It favors the elimination of excessive secretions. To prevent or treat cold. It can be used in washing 1 to 6 times a day, it allows babies to be wet in case of cold eye hygiene This serum can also be used for the baby's eye hygiene, to introduce, wash, apply compresses or cotton soaked, or directly pour a few drops into the eye 100 % natural origin. For hygiene and care of the baby's nose, the physiological serum is composed of natural ingredients: based on sodium chloride and purified water: a solution well tolerated by the mucous membranes of babies