A device for co-metering liquid and/or pasty products includes: a first metering unit for metering a first product； a second metering unit for metering a second product； and a nozzle including a first duct supplied by the first metering unit and opening out into a first orifice, a second duct supplied by the second metering unit and opening out into a second orifice, and a third duct opening out into a third orifice. The device is configured such that the third duct is supplied by the first and second metering units such that a mixture of the first and second products is discharged by the third orifice.
