Abstract: A device for protecting at least one part of the face of a user to prevent the spread of projections from the respiratory tract. A single flexible sheet, made of a material impermeable to the spread of these projections, and defining a substantially rectangular or square strip and at least two first straps each coming from one of the ends of the upper edge of the strip, the strip of the sheet being shaped to cover at least the nose and the mouth of the user, the upper edge of the strip resting on the top of the nose or on the forehead, the two first straps being arranged to be tied together at the back of the user's head, passing over their ears.