A dispenser comprises a cylinder in fluid communication with a one-way valve and an inlet in fluid communication with the cylinder. A lumen and a flow control member deliver fluid from a container to the inlet. A piston draws fluid through the flow control member and inlet into the cylinder upon movement of the piston in a first direction, and expels the fluid through the one-way valve upon movement of the piston in a second direction. The dispenser may be activated by either a “dual-action” mode of operation where an activating member is moved to retract the piston and provide the stored energy and then an-actuator is depressed to release the stored energy to the piston or a “single-action” mode of operation where an actuator is depressed in a single direction which concurrently retracts the piston, provides the stored energy and then releases the stored energy to piston.
