A cartridge for a cosmetic product includes a first longitudinal end for allowing access to the cosmetic product and a second longitudinal end. The cartridge further includes: an outer tube; a control sleeve; a receptacle for cosmetic product; and a bottom element, integral in rotation with the control sleeve. The cartridge is configured so as to be detachably coupled to a base such that a relative rotation of the base in relation to the cartridge causes a movement of the receptacle for cosmetic product. The bottom element contributes to closing off access to the cartridge via the second longitudinal end of the cartridge.