Sampling-type spraying device

A dispenser device for dispensing a fluid substance in spray form comprising:

• a reservoir containing the fluid substance to be dispensed, and
• a spray duct that is initially sealed closed with a seal portion and that is subsequently opened by pulling said seal portion away from said spray duct to define an open spray orifice across said spray duct,
• said reservoir including at least one actuating wall that can be deformed by a user applying a pressing force to reduce the internal volume of the reservoir after said spray duct has been opened and thus to exert a pressure on the fluid substance to deliver it through the spray orifice wherein said at least one actuating wall has a predetermined threshold of resistance to deformation after said spray duct has been opened that must be overcome in order to deform it and wherein the resistance to deformation of said at least one actuating wall falls below said predetermined threshold after initial application to said at least one actuating wall of a pressing force that is initially greater than said predetermined threshold, said at least one actuating wall being constructed to prevent deformation sufficient to open said initially sealed closed spray duct when a pressing force is applied by said user.