Discharge head and fluid dispenser with such a discharge head

A liquid dispenser comprising:

• a liquid reservoir;
• and
• a discharge head, the discharge head comprising:
• a discharge head base including a coupling device for connecting to the liquid reservoir;
• a discharge opening;
• a pump device for conveying liquid from the liquid reservoir to the discharge opening, the pump device including a pump cylinder formed by a cylinder component movable relative to the discharge head base and having a cylinder sliding surface, and a pump piston, the pump piston being fixedly arranged relative to the discharge head base and being at least temporarily guided in a sealing manner along the cylinder sliding surface;
• and
• a return spring configured as a plastic bellows spring, the bellows spring exerting a counteracting return force on the cylinder component when the cylinder component is moved in an actuating direction relative to the pump piston.