A cosmetic fluid dispenser, comprising in combination a vertically elongated housing structure containing upper and lower compartments, the lower compartment configured to receive and store cosmetic fluid; a dispenser tube projecting vertically from the lower interior of the lower compartment, upwardly into the upper compartment; a plunger movable vertically in the housing, the housing structure including a rotor rotatable to drive the plunger downwardly for effecting fluid displacement into and upwardly in the dispenser tube; and a valve for preventing inadvertent leakage of fluid from the tube, and characterized as openable in response to use of the dispenser.