Buffer applicator device with an introduction end and a rear end, containing a buffer (1) of an absorbent material with a buffer body (2) having a cylindrical part and at the introduction end has a head (4) rounded with an outer diameter slightly larger than the circular cylindrical part, an annular contact surface (5), and an applicator consisting of an outer tube (13) and a tube being made between the circular cylindrical part and the head (4). inside (7) telescopically slidable inside it, the outer tube (13) having at its insertion end at least two inwardly oriented closure sections (15) formed in one piece, the closing sections being separated ( 15) of the outer tube (13) from one another by slits (16) that start from the insertion end of the outer tube, the buffer (1) projecting with its insertion end of the insertion end ón of the inner tube (7) while in a delivery state it is fully housed inside the outer tube (13), the inner tube (7) having at its insertion end at least two inwardly oriented closure sections (9), formed in one piece, which are separated from each other by slits (10) that start from the insertion end of the inner tube, characterized in that before being removed backwards from the outer tube (13), the inner tube (7) has a advanced position in which the head (4) of the buffer (1) protrudes from the closure sections (15) of the outer tube (13), attacking the closure sections (15) of the outer tube (13) on the enveloping surface of the buffer body (2) and on the contact surface (5) holding the buffer (1) in position with respect to the outer tube (13), being made a backward position of the inner tube in which the closing sections (9) of the inner tube (7) are dis placed in an elastically turned position behind a rear front side (6) of the buffer body (2) to eject a buffer (1) from the outer tube (13), the inner surface of the outer tube (13) being formed, starting from the closing sections (15), with a smooth wall and without projections protrudi
