Do not use RO/Filter water as it stops the steam generation process . Always Use Normal Tap Water . Recommended to wash the container with lukewarm water to avoid plastic smell during initial use . Facial Steamer get used for beauty purpose. You can use the sauna during facial, massaging and at the time of clean up. The vaporizer helps to clear the clogs and rejuvenates your skin . It is suitable for respiratory ailments therapy, aromatherapy, cold nose and throat treatment, bronchitis, laryngitis, hay fever, arthritis & asthma . Used on normal, oily, dry, combination and sensitive skin types - Makes skin become ideal neutral skin: tender, younger and healthier .