A device for carrying out a relaxation treatment on the forehead of a person to be treated by producing a continuous liquid stream, the device comprising - an outlet nozzle for forming the liquid stream; - a liquid reservoir which is designed to receive the liquid stream at least partially; - a sliding unit for reciprocating movement of the outlet nozzle in a lateral direction; - at least one circulation pump to convey liquid from the liquid reservoir to the outlet nozzle; - a pipe system connecting the outlet nozzle and/or the liquid reservoir with the at least one circulation pump; - a housing, characterised in that the housing has a base housing element and a top housing element, wherein the liquid reservoir and the at least one circulation pump are located in the base housing element; wherein the outlet nozzle and the sliding unit are located in the top housing element; wherein the pipe system has at least one flexible pipe connecting the at least one circulation pump being located in the base housing element with the outlet nozzle being located in the top housing element, and that the top housing element is pivotally connected to the base housing element so that the device can be brought from a transporting state, in which the housing is collapsed, to an opened operating state, in which the top housing element is pivoted open so that a receiving volume for the head of the person to be treated is formed between the base housing element and the outlet nozzle being located in the top housing element. the device comprising - an outlet nozzle for forming the liquid stream; - a liquid reservoir which is designed to receive the liquid stream at least partially; - a sliding unit for reciprocating movement of the outlet nozzle in a lateral direction; - at least one circulation pump to convey liquid from the liquid reservoir to the outlet nozzle; - a pipe system connecting the outlet nozzle and/or the liquid reservoir with the at least one circulation pump; - a housing, - an outlet nozzle for forming the liquid stream; - a liquid reservoir which is designed to receive the liquid stream at least partially; - a sliding unit for reciprocating movement of the outlet nozzle in a lateral direction; - at least one circulation pump to convey liquid from the liquid reservoir to the outlet nozzle; - a pipe system connecting the outlet nozzle and/or the liquid reservoir with the at least one circulation pump; - a housing, characterised in that the housing has a base housing element and a top housing element, wherein the liquid reservoir and the at least one circulation pump are located in the base housing element; wherein the outlet nozzle and the sliding unit are located in the top housing element; wherein the pipe system has at least one flexible pipe connecting the at least one circulation pump being located in the base housing element with the outlet nozzle being located in the top housing element, and that the top housing element is pivotally connected to the base housing element so that the device can be brought from a transporting state, in which the housing is collapsed, to an opened operating state, in which the top housing element is pivoted open so that a receiving volume for the head of the person to be treated is formed between the base housing element and the outlet nozzle being located in the top housing element.