Packaging kit and refill container

Disclosed is a consumer product packaging kit comprising a closure (1), an outer container (2) and an inner container (3) capable of releasably engaging with an inside of the outer container (2), wherein the outer container (2) comprises: an open mouth (21) at the top of the outer container (2), a shoulder (22), a body (23), an open base (24) at the bottom of the outer container (2), an annular extension (26) longitudinally offset from the open mouth (21), and an engagement structure (27); and wherein the inner container (3) for containing consumer product comprises: an open top end (31) releasably engaging with the annular extension (26) to secure the inner container (3) to the outer container (2) when the inner container (3) is in a fully engaged position, a side wall (32), a closed bottom end (33), and an engagement coupler (34) cooperating with the engagement structure (27) to secure the inner container (3) to the body (23) of outer container (2) when the inner container (3) is in a fully engaged position, wherein the engagement structure (27) is in the lower portion of the body (23) and the engagement coupler (34) is in the lower portion of the side wall (32).