<p>The proactive material sprayer comprises housing (12) and a pressure container (14) for storing a proactive material. A spraying head (18) is provided for releasing the proactive material through low pressure of the sprayer. The spraying head has a tactile or visual display device (34) with an elastically deformed sliding unit (60). The display device has a blocking element which is arranged between the pressure container and the spraying head.</p>
