Cosmetic product application device (10; 110; 210), comprising: - a first part (12; 112; 212) extending along a longitudinal direction between a first end and a second end (26; 126; 226) - a second part, the first part (12; 112; 212) being able to be removably fixed to the second part on the first end of the first part (12; 112; 212), - a dressing (16; 116; 216) is able to be moved between an engaged position, in which the dressing (16; 116; 216) covers at least partially the first part (12; 112; 212), and a free position, in which the dressing (16; 116; 216) is separated from the first part (12; 112; 212) and from the second part. in which the displacement between the engaged position and the free position is carried out by translation of the dressing (16; 116; 216) along the longitudinal direction around the first part (12; 112; 212) from the second end (26; 126; 226) of the first part (12; 112; 212), wherein the first part (12; 112; 212) comprises at least one first indexing element (30; 130; 230), the dressing (16; 116; 216) comprising a collar (48; 148; 248) comprising at least one second indexing element (64; 164; 264), the second indexing element (64; 164; 264) being able to be reversibly engaged with the first indexing element (30; 130; 230) in order to maintain the dressing (16; 116; 216) in the engaged position, characterized in that the dressing (16; 116; 216) comprises a thrusting member (50; 150; 250) movably mounted with respect to the collar (48; 148; 248) between an idle position and an extraction position, the thrusting member (50; 150; 250) being able to disengage the first indexing element (30; 130; 230) and the second indexing element (64; 164; 264) in the extraction position. - a first part (12; 112; 212) extending along a longitudinal direction between a first end and a second end (26; 126; 226) - a second part, the first part (12; 112; 212) being able to be removably fixed to the second part on the first end of the first part (12; 112; 212), - a dressing (16; 116; 216) is able to be moved between an engaged position, in which the dressing (16; 116; 216) covers at least partially the first part (12; 112; 212), and a free position, in which the dressing (16; 116; 216) is separated from the first part (12; 112; 212) and from the second part. in which the displacement between the engaged position and the free position is carried out by translation of the dressing (16; 116; 216) along the longitudinal direction around the first part (12; 112; 212) from the second end (26; 126; 226) of the first part (12; 112; 212), wherein the first part (12; 112; 212) comprises at least one first indexing element (30; 130; 230), the dressing (16; 116; 216) comprising a collar (48; 148; 248) comprising at least one second indexing element (64; 164; 264), the second indexing element (64; 164; 264) being able to be reversibly engaged with the first indexing element (30; 130; 230) in order to maintain the dressing (16; 116; 216) in the engaged position, characterized in that the dressing (16; 116; 216) comprises a thrusting member (50; 150; 250) movably mounted with respect to the collar (48; 148; 248) between an idle position and an extraction position, the thrusting member (50; 150; 250) being able to disengage the first indexing element (30; 130; 230) and the second indexing element (64; 164; 264) in the extraction position. in which the displacement between the engaged position and the free position is carried out by translation of the dressing (16; 116; 216) along the longitudinal direction around the first part (12; 112; 212) from the second end (26; 126; 226) of the first part (12; 112; 212), wherein the first part (12; 112; 212) comprises at least one first indexing element (30; 130; 230), the dressing (16; 116; 216) comprising a collar (48; 148; 248) comprising at least one second indexing element (64; 164; 264), the second indexing element (64; 164; 264) being able to be reversibly engaged with the first indexing element (30; 130; 230) in order to maintain the dressing (16; 116; 216) in the engaged position, characterized in that the dressing (16; 116; 216) comprises a thrusting member (50; 150; 250) movably mounted with respect to the collar (48; 148; 248) between an idle position and an extraction position, the thrusting member (50; 150; 250) being able to disengage the first indexing element (30; 130; 230) and the second indexing element (64; 164; 264) in the extraction position.