Naturally freshen the air around you with PureSpa Essence Aromatherapy Oil Diffuser from Pure Enrichment. Using ultrasonic wave technology, this modern diffuser distributes a gentle, cool mist throughout your home or office. To enhance the scent of the room, add your favorite essential oil (not included). Many therapeutic-grade essential oils like lavender, eucalyptus, tea tree, and sweet orange are believed to help create a more comfortable atmosphere for people suffering from a cold, nasal congestion, allergies, asthma and other conditions. It d iffuses all-natural essential oils with aroma coverage that lasts up to 3 hours and covers rooms and workspaces up to 160 square feet. PureSpa Essence is backed by Pure Enrichment's industry-leading 5-Year Warranty so your satisfaction is 100% guaranteed.