on the top of a mould above each of several cavities for moulding sticks of lipstick , is disposed a first tubular element of a cup comprising an external device for catch - engagement with a second tubular element of the cup , which second tubular element is intended to cooperate with the rest of the case , namely a shell with its internal liner and sleeve . the composition of the lipstick is cast through the first tubular element portion to fill the cavity and at least partly fill the internal space of the first tubular element . after solidification , the case is brought above each cavity to mount the second tubular element in the upper portion of the case until the second tubular element is catch - engaged on the first tubular element . the unit thus formed is extracted from the mould by upward translation and the lipstick thus cast is retracted into its case .