Pump dispenser

A pump dispenser comprising:

• a) a bottle comprising a neck;
• b) a pump assembly comprising:
• b1) an actuator;
• b2) a closure connected to the actuator and coupled to the neck of the bottle;
• b3) a dip tube;
• b4) a dual chamber pump comprising:
• i) a piston assembly, wherein the piston assembly is in fluid communication with the actuator;
• wherein the piston assembly comprises a piston skirt;
• a piston rod engaged with the piston skirt;
• and a spring:
• wherein the piston skirt seals the upper portion of the pump chamber;
• wherein the piston rod has a hollow inner cavity having an upper portion and a lower portion;
• wherein the upper portion of the hollow inner cavity includes a pull stick;
• wherein the lower portion of the hollow inner cavity includes a piston tip;
• ii) wherein the pull stick is engaged with the piston tip;
• iii) wherein the piston tip is slidably engaged with the core and the piston tip is configured to move relative to the pull stick;
• iv) a housing including a pump chamber, a storage chamber and a core:
• wherein the pump chamber has a cavity therein, wherein the pump chamber has an upper portion and a lower portion, wherein the piston assembly is interior to the pump chamber and slidably engaged with the pump chamber;
• wherein the storage chamber has a cavity therein, wherein the storage chamber has an upper portion and a lower portion, wherein the storage chamber cavity comprises a substance to be released in a formulation contained in the bottle;
• wherein the core has a cavity therein;
• wherein the core is a sleeve protruding from the lower portion of the pump chamber through the storage chamber towards the dip tube;
• wherein the core comprises a connecting stem;
• iii) a sealing cap, wherein the sealing cap is rigidly connected to the core and closes the storage chamber at the lower portion of the storage chamber such that the substance to be released remains stored in the storage chamber cavity;
• such that when the actuator is pushed down for a first time by a user, the piston assembly moves to push down the connecting stem, which pushes down the sealing cap to open the storage chamber for releasing the substance contained in the storage chamber in the bottle.