A dose counting mechanism for an aerosol dispenser , wherein the dose counting mechanism comprises: a first body structure , a second body structure rotatably attached to the first body structure , an annular dose counter provided with a plurality of teeth along its perimeter, the dose counter being arranged coaxially with the first body structure and the second body structure , each of the first body structure and the second body structure being rotatable relative to the dose counter; a rotatable actuator configured to mesh with the teeth of the dose counter , the actuator being configured to follow the perimeter of the dose counter when the second body structure is rotated relative to the first body structure , and a rotator configured to rotate concurrently with one of the first body structure and the second body structure , the rotator being configured to engage with the actuator when rotation of the first body structure relative to the second body structure is initiated, causing the actuator to rotate about its central axis thereby rotating the dose counter in a first direction; the dose counting mechanism is characterized in that the dose counter is provided with a remaining dose scale along its external perimeter; wherein the dose counter has an axial tab , the tab being axially aligned with an empty dose indication of the remaining dose scale ; and wherein the dose counting mechanism comprises a movable activation member configured to be moved axially relative to a central axis of one of the first body structure and the second body structure , from a non-triggering position to a triggering position, wherein the activation member is provided with a dose display indicating a remaining dose on the remaining dose scale , wherein the tab is configured to prevent axial movement of the activation member from the non-triggering position to the triggering position when the dose counter is positioned so that the dose display indicates that the remaining dose is the empty dose indication. a first body structure , a second body structure rotatably attached to the first body structure , an annular dose counter provided with a plurality of teeth along its perimeter, the dose counter being arranged coaxially with the first body structure and the second body structure , each of the first body structure and the second body structure being rotatable relative to the dose counter; a rotatable actuator configured to mesh with the teeth of the dose counter , the actuator being configured to follow the perimeter of the dose counter when the second body structure is rotated relative to the first body structure , and a rotator configured to rotate concurrently with one of the first body structure and the second body structure , the rotator being configured to engage with the actuator when rotation of the first body structure relative to the second body structure is initiated, causing the actuator to rotate about its central axis thereby rotating the dose counter in a first direction; the dose counting mechanism is characterized in that the dose counter is provided with a remaining dose scale along its external perimeter; wherein the dose counter has an axial tab , the tab being axially aligned with an empty dose indication of the remaining dose scale ; and wherein the dose counting mechanism comprises a movable activation member configured to be moved axially relative to a central axis of one of the first body structure and the second body structure , from a non-triggering position to a triggering position, wherein the activation member is provided with a dose display indicating a remaining dose on the remaining dose scale , wherein the tab is configured to prevent axial movement of the activation member from the non-triggering position to the triggering position when the dose counter is positioned so that the dose display indicates that the remaining dose is the empty dose indication. <EOS>