In the case of a cosmetic unit, including a container for holding a cosmetic, a closure cap for the container, and an applicator, which is arranged on the closure cap and is intended for applying the cosmetic, wherein two such cosmetic units can be connected to each other via a coupling device, the cosmetic unit has a coupling device which is formed on the closure cap and is intended for connection to a second cosmetic unit having a corresponding coupling device, wherein the coupling device has a coupling recess which extends perpendicularly to the central longitudinal axis of the cosmetic unit and the inner wall of which forms at least one undercut, and a coupling projection which is of complementary design to the coupling recess in such a manner that the coupling projection of a first cosmetic unit can be pushed, by a pushing movement of the cosmetic units which are to be connected, into the coupling recess of the second cosmetic unit and, in the pushed-in state, is held there in an interlocking manner.