A multi-phase cosmetic composition mixing pack for mixing immiscible components of a multi-phase cosmetic composition such that they are temporarily miscible includes a container for holding the multi-phase cosmetic composition that has a first open end. The mixing pack further includes a mixing assembly disposed within the container for mixing immiscible components of the multi-phase cosmetic composition such that they are temporarily miscible, and an actuator assembly for actuating the mixing assembly. The actuator assembly comprises a stem receivable within the first open end of the container. The stem includes a cam surface extending along at least a portion of a length of the stem, and a cam follower surface defined on the mixing assembly, wherein linear reciprocating motion of the stem causes rotation of the mixing assembly.