A device (1) comprises a reservoir (2), preferably having a transparent wall (8), for holding a flowable product (3) and a dispensing head (4) for discharging the product (3). The dispensing head (4) is joined to the reservoir (2) via a coupling (5), especially a threaded coupling. Provided on dispensing head (4) is an actuator device (6) for opening and closing the dispensing head (4) as desired in order to dispense product accordingly from a discharge opening (18). In order to prevent erroneous refilling with product when an empty reservoir (2) is replaced with a full reservoir (2), especially when there is a set of reservoirs (2) having different products (3) for coloring hair, it is proposed that the product (3) be a powdered or granulate hair dye and that the surface of the dispensing head (4) or the actuator device (6) have an information surface (7) that is to be assigned to the product (3). The powder or granulate form thus serves to ensure recognition of the color of the product (3).