Dosing closure and container utilizing the same

A doser for a container containing a substance, said doser comprising:

• a dosing member sized and configured to be located at least partially inside a dispensing end of a container;
• said dosing member comprising at least a bottom wall, a vertical separating wall, and a retaining wall and a retaining space of predetermined volume configured to retain a dispensable amount of said substance;
• at least the bottom wall and at least a portion of the retaining space being configured to be located inside the dispensing end of the container;
• and
• a rotatable surface directly overlying the dosing member and being configured to rotate about a center axis of the dosing member while the dosing member remains rotationally stationary relative to the container and having spaced apart first and second dispensing openings,
• wherein, when the doser is arranged on a container, the rotatable surface is configured to rotate while the dosing member remains rotationally static relative to the container and the container dispenses the dispensable amount of said substance through one of the first and second dispensing openings, the dosing member substantially prevents the substance contained in the container from either passing into the retaining space or being dispensed with the dispensable amount.