Device (101, 102, 103, 104) for dispensing a fluid, comprising: - a reservoir arranged to contain the fluid, - a dispensing pipe arranged to convey the fluid in a dispensing direction, - a dispensing orifice connecting the reservoir to the dispensing pipe, - a dispensing valve which, in an open state, allows fluid to pass from the inside of the reservoir towards the dispensing pipe through the dispensing orifice and, in a closed state, does not allow fluid to pass from the inside of the reservoir towards the dispensing pipe, and - a return means arranged to exert a force on the dispensing valve, this force returning the dispensing valve from its open state to its closed state, the return means comprising a pouch forming a hollow, said pouch being situated in the dispensing pipe, the pouch being deformed by compression when the dispensing valve is in the open state characterized in that: - the pouch is a pouch open on one side through an opening delimited by an outer edge of the hollow, so that in the closed state the outer edge of the hollow is pressed against a first inner wall of the dispensing pipe, and/or in the closed state the pouch undergoes a compression against a second inner wall of the dispensing pipe; and characterized in that in the open state the outer edge of the hollow or a bottom of the pouch moves away respectively from the first or second inner wall of the dispensing pipe, or - the dispensing valve comprises a dispensing membrane, the pouch forming, in one plane, a closed loop inside which the hollow is delimited so that in the closed state the dispensing membrane or a first side of the loop is pressed against a first inner wall of the dispensing pipe; in the open state and in the closed state the pouch undergoes a compression against a second inner wall of the dispensing pipe; and in the open state the first side of the loop moves away from the first inner wall of the dispensing pipe. - a reservoir arranged to contain the fluid, - a dispensing pipe arranged to convey the fluid in a dispensing direction, - a dispensing orifice connecting the reservoir to the dispensing pipe, - a dispensing valve which, in an open state, allows fluid to pass from the inside of the reservoir towards the dispensing pipe through the dispensing orifice and, in a closed state, does not allow fluid to pass from the inside of the reservoir towards the dispensing pipe, and - a return means arranged to exert a force on the dispensing valve, this force returning the dispensing valve from its open state to its closed state, - the pouch is a pouch open on one side through an opening delimited by an outer edge of the hollow, so that in the closed state the outer edge of the hollow is pressed against a first inner wall of the dispensing pipe, and/or in the closed state the pouch undergoes a compression against a second inner wall of the dispensing pipe; and characterized in that in the open state the outer edge of the hollow or a bottom of the pouch moves away respectively from the first or second inner wall of the dispensing pipe, or - the dispensing valve comprises a dispensing membrane, the pouch forming, in one plane, a closed loop inside which the hollow is delimited so that in the closed state the dispensing membrane or a first side of the loop is pressed against a first inner wall of the dispensing pipe; in the open state and in the closed state the pouch undergoes a compression against a second inner wall of the dispensing pipe; and in the open state the first side of the loop moves away from the first inner wall of the dispensing pipe.