The invention relates to a sanitary device (1) for applying at least one active principle inside a human or animal body cavity, said device comprising at least one biodegradable film (3) containing the at least one active substance and an applicator including: a main tubular body (4)； and an ejector body (2) comprising a distal portion (202), at least one part of the surface of which forms a support for the at least one biodegradable film (3) and the end (203) of which is rounded, whereby said ejector body (2) can slide inside the main body (4) between at least one position in which the distal portion (202) of the ejector body (2) is located inside the main body (4) and an application position in which the distal portion (202) is located outside same, in the axial extension of the main body (4).
