The pump actuator head includes a base cap adapted for mounting on a container neck portion and provided with a central hole and a nozzle rotatably mounted on the base cap along an X-axis, and being movable between an operable or open position and an inoperable or closed position. The nozzle has a hollow cylinder centered along the X-axis, having a lower part inserted into the central hole of the base cap, and is provided with a guiding protrusion axially extending from the peripheral wall of the cylinder. The nozzle also has a dispensing nose extending from the cylinder and defining a dispensing channel. The base cap includes means provided in the inner face of the base cap for limiting or slowing the rotation of the nozzle. Finally, the guiding protrusion interferes with the means for limiting and for slowing down the rotation of the nozzle when turning the nozzle.