Otological solution with drops, with a formula rich in acetic acid, which helps in the protection and daily hygiene of the ear, as well as in the restoration of normal microbial and fungal flora thanks to the exclusive technology "Ultramicro" Princeps. Thanks to its specific formulation it is useful in controlling the growth of microorganisms. Acetic acid is used to treat an infection of the outer ear (otitis externa), stopping the growth of bacteria and fungi. Treating the infection reduces pain and swelling in the ear. This medicine may also contain drying ingredients such as glycerin or alcohol. Drying of the ear canal helps cure the infection. How to use: Tilt your head to one side and pour 2 drops of solution, 3-4 times a day, in the ear canal. Let it act for a few minutes by keeping your head straight.