An actuator (2) for an inhaler (1) comprising a longitudinally extending body (3), a delivery passage at (or near to) a first end of the body (3) and a retained cover (7) for the delivery passage, the actuator (2) having at least one profile (9) arranged to guide the cover (7) from a closed position occluding at least a user-opening (6) of the delivery passage to a remote location in which the user-opening (6) of the delivery passage is unoccluded wherein the cover (7) and the at least one profile (9) are configured and arranged such that, in use of the actuator (2), in the guided movement of the cover (7) from the closed position to the remote location, the cover (7) is glided by the user towards the second end of the body (3).
