Pump dispenser and system comprising a refill cartridge and the pump dispenser

A kit, comprising:

• a pump dispenser comprising a body defining a hollow interior and an opening through which at least a portion of a refill cartridge containing a flowable substance is receivable into the hollow interior, a pump for pumping the flowable substance from the refill cartridge when the portion of the refill cartridge is in the hollow interior, and a dip tube with a lumen fluidly connected to the pump, the dip tube having a tapered end that is located in the hollow interior of the body when the pump dispenser is positioned over the body and the refill cartridge;
• and
• the refill cartridge, wherein the refill cartridge comprises a container defining a chamber containing the flowable substance, a rim defining an opening through which the flowable substance is dispensable from the chamber, and a seal attached to the container and closing the opening, wherein the seal is attached to the rim, the seal being puncturable by the tapered end of the dip tube when the portion of the refill cartridge is in the hollow interior and the pump is inserted into said refill cartridge.