Yes, the contact surface of rubber brake pads, like the outer surface of many pencil erasers, can dry and develop a similar type of glazing ... You can try de-glazing the contact surface with a small piece of emery cloth ... This can be done without removing the pads from the brakes BUT I would probably remove the wheels from the frame & fork to de-glaze the brake pads. Of course, you can buy replacement pads if that is your preference.