Dispenser for a pasty medium, comprising • a pot for storing a medium and • an applicator head, which is connected to the pot, for discharging the pasty medium, wherein the applicator head comprises: • a metering chamber, • a first housing part bounding the metering chamber in sections, with an actuating element, and • a second housing part, wherein • by actuation of the actuating element, the medium can be conveyed out of the pot into the metering chamber and/or can be discharged from the metering chamber, • an outlet valve which is assigned to the metering chamber is provided, wherein the medium can be discharged from the metering chamber via the outlet valve by actuation of the actuating element, • the first housing part and the second housing part form a constructional unit which is connectable to the pot and closes the pot, • the first housing part has a dispensing surface designed as a trough-shaped depression on an outer wall, with respect to which the outlet valve opens, • an inlet valve which is assigned to the metering chamber is provided, wherein, by resetting the actuating element, a negative pressure can be generated in the metering chamber and, owing to a negative pressure in the metering chamber, a medium can be conveyed via the inlet valve into the metering chamber, and wherein the sealing element and the inlet valve are manufactured as a common component composed of an elastically deformable plastic, characterized in that • the sealing element is arranged in such a manner that the pot is closable in a sealing manner by means of the constructional unit, and • the second housing part and the sealing element are manufactured as an integral injection molded part composed of at least two plastics of different properties, wherein the housing part is composed of the first of the two plastics, and the sealing element is composed of the second of the two plastics. • a pot for storing a medium and • an applicator head, which is connected to the pot, for discharging the pasty medium, • a metering chamber, • a first housing part bounding the metering chamber in sections, with an actuating element, and • a second housing part, • by actuation of the actuating element, the medium can be conveyed out of the pot into the metering chamber and/or can be discharged from the metering chamber, • an outlet valve which is assigned to the metering chamber is provided, wherein the medium can be discharged from the metering chamber via the outlet valve by actuation of the actuating element, • the first housing part and the second housing part form a constructional unit which is connectable to the pot and closes the pot, • the first housing part has a dispensing surface designed as a trough-shaped depression on an outer wall, with respect to which the outlet valve opens, • an inlet valve which is assigned to the metering chamber is provided, wherein, by resetting the actuating element, a negative pressure can be generated in the metering chamber and, owing to a negative pressure in the metering chamber, a medium can be conveyed via the inlet valve into the metering chamber, and wherein the sealing element and the inlet valve are manufactured as a common component composed of an elastically deformable plastic, characterized in that • the sealing element is arranged in such a manner that the pot is closable in a sealing manner by means of the constructional unit, and • the second housing part and the sealing element are manufactured as an integral injection molded part composed of at least two plastics of different properties, wherein the housing part is composed of the first of the two plastics, and the sealing element is composed of the second of the two plastics.