With the principles of aromatherapy to gently improve your mood and general well-being as a basis, all Goodsphere Essences are naturally enriched with essential oils, are non-alcoholic, non-combustible, and have been formulated to reduce the risk or irritation and allergy. Works with Goodsphere Aroma-Therapeutic Total Pure Air System and All Similar Devices, Air Purifiers, Air Revitalizers, Air Diffusers and Ultrasonic Humidifiers.