Abstract: A protective outer shell for a cosmetic container, such as a lipstick container, having a tubular shell cover and a tubular shell base wherein the shell cover is positively retained on the shell base. The shell cover includes at least one radially inwardly extending rib extending along an inner surface of the cover. The rib cooperates with a locking member extending radially outward from the shell base so that the shell cover is moveable between a locked and unlocked position. In the locked position, rotational and axial movement of the shell cover relative to the shell base is limited to prevent accidental removal of the cover from the base.