Lampe Berger -Air Pur So Neutral Purifying Solution (500ml)Part of the Functionals series, So Neutral is the essential Lampe Berger deodorizing and purifying homes, living spaces and work spaces without releasing fragrance, for cleaner and healthier surroundings. Functional as well as essential, Lampe Berger's So Neutral also servers to optimize burners, increasing lifespan while cleaning burners between two fragrances. When used alongside a Lampe Berger fragranced fluid, So Neutral can be used to dilute and