Oil is placed onto an absorbent pad which is inserted into the bottom of the machine. Fan assisted airflow vaporises the oil, dispersing fragrance into the air. As the Vaporiser doesn’t use heat, it is safe to leave unattended, or whilst you sleep. This can be particularly useful with conventional cold vapour remedies and for use in a child’s bedroom. The Aroma Stream will fragrance a large room, good for nursing homes and hospitals. Supplied with 1 pad, oils and box not included.