An outer shell for a dispenser and a method for making same are provided, the outer shell including first and second injection molded plastic component parts. The first and second component parts each include an outer surface and an inner surface, with the first component part having a first mating surface directed to the outer surface of the first component part and the second component part having a second mating surface directed to an inner surface of the second component part. The first and second component parts are joined to each other along a seam by mating the first mating surface and the second mating surface during injection moulding. A plurality of recesses is formed in the inner surface of the first component part along the seam and/or on a gate protrusion extending away from a free end of the first mating surface of the first component part.