Neutral is the practical and most useful of the refills. Use it to dilute any of the fragrances. Use if you want to deodorize but not perfume the air. Great for anyone with allergies also. Lampair is the Millefiori brand dedicated to catalytic diffusers. A range of catalytic lamps developed with the elegance and sense of design style Millfiori is famous for. Enables you to purify and scent your air anywhere at home or in the office. Catalytic lamps help create a pleasant-smelling space in any room while decorating your space. Thanks to their functioning system, a light amount of the chosen scent is steadily emitted in a very short lapse of time, making this method, among the many others for cleaning the air, a very rapid and efficient one to eliminate odours. The catalytic combustion, unlike ordinary systems which just cover odours, makes it possible to burn particles of smoke or other substances with an unpleasant odour and simultaneously emit a nice scent in the room. Millefiori (means a thousand flowers in Italian), based in Italy creates unique products that are both beautiful and useful. Their reputation is of unique quality fragrances for the home and bath, scents that are found in all the different product types the company offers.