The technology behind the Lampe Berger Effusion Lamp is the ceramic in the AIR PUR System 3C® burner. It is the result of several years of research. Its regular, constant porosity plays an important part in ensuring efficient cleansing of the air and the quality of the diffusion of the home fragrances. Lampe Berger uses Catalytic combustion, which is a flameless combustion, which takes place because of the action of a catalyst. Lampe Berger Lamps do not only fragrance the air, but clean it too!