A refill is removably mountable on an actuation base and configured to receive a cosmetic product. The refill includes grooves and/or ribs configured to cooperate respectively with all or part of ribs and/or grooves of the actuation base so as to allow the refill to be mounted on the actuation base to allow an entry and/or an exit of the cosmetic product. To that end, the grooves and/or ribs of the refill extend longitudinally over a part of the height of an internal skirt toward a first end of the refill.

A refillable applicator for a cosmetic product includes a cartridge that is movable between an initial position and an ejected position. The applicator includes a case housing the cartridge, and a push button designed to eject the cartridge, the push button being movable between an idle position wherein it is designed to enable the cartridge to be in the initial position in the case, and an ejection position wherein it is designed to eject the cartridge from the case.

Refill systems and cosmetic packages having such refill systems are provided herein. In some embodiments, a cosmetic package includes: a base having an inner volume and a drive post disposed proximate a bottom of the base, the drive post extending into the inner volume; a refill cartridge configured to be removably disposed within the inner volume of the base, the refill cartridge including a recess configured to mate with the drive post; and a cap configured to rest on the base and enclose the refill cartridge within the inner volume.