waterless aromatherapy diffuser takes in cold air to compress the oil molecules into a dry mist. This allows the oils to spread across a large area without losing any scent, thus maximizing the health benefits. Furthermore, after the oil molecules are processed into nanoparticles by a waterless essential oil diffuser, particles that are ultra-lightweight, stay in the air much longer than with diffusers which lack the nanotechnology component that allows the heavy oil molecules to be broken down into light nanoparticles.