Groupon offers ArtNaturals Cool Mist Ultrasonic Humidifier with Essential Oil Gift Set (8-Pack) for $29.99. Free shipping on orders over $34.99 and free returns. The set includes ArtNaturals Cool Mist Ultrasonic Humidifier, Tea tree, Eucalyptus, Rosemary, Lavender, Lemongrass, Sweet orange, Peppermint, and Frankincense essential oil.
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