Refillable dispensing container and refill container

A refillable dispensing container comprising:

• an outer container having an open top and a holding space formed therein;
• an inner container having an open top and a storage space formed therein, the inner container configured to be inserted within the holding space;
• a holder comprising a holder body and a support protrusion, the holder coupled to the open top of the inner container, the holder body having a holder channel formed therein, the holder channel vertically penetrating the holder body, the support protrusion protruding upward from an upper surface of the holder body;
• an inner cap having a cap channel formed therein and configured to be detachably coupled to the open top of the outer container, the cap channel vertically penetrating the inner cap and formed in a position corresponding to the holder channel, the inner cap configured to press the holder against the inner container while the inner cap is coupled to the outer container;
• a shoulder having a through-hole formed in an upper portion thereof, the shoulder coupled to an outer side of the inner cap;
• a button having a dispensing hole formed in an upper portion thereof, the button coupled to the through-hole of the shoulder such that the button is movable along a vertical direction and a portion of the button passes through the through-hole;
• and
• a pump module arranged adjacently to the holder channel and the cap channel, the pump module including an elastic member to elastically support the button in relation to the inner cap, the pump module configured to dispense a content stored in the storage space out of the dispensing hole when the button is pressed.