Headrest for a vehicle seat

The headrest has a headrest rod (21) inserted into a headrest casing of a backrest of a motor vehicles seat, where the height of the headrest is adjusted in a normal position relative to a slider (15). The slider is interlocked with the backrest in the normal position and moved relative to the casing when running into a working position, where the loaded traction force is affected on the slider and a spring is engaged at the slider. An independent claim is also included for a motor vehicles seat comprising a headrest.