FIR Greenleaf Essential Oil Fir's cool, crisp profile delivers a much-desired calming aura. Promote a jovial holiday atmosphere in your home with the refreshing scent of Fir or bundle together with the Greenleaf Ultrasonic Water Diffuser and a Peppermint essential oil for a festive gift! Each Greenleaf essential oil bottle holds 0.5 fl oz of 100% pure, natural, and undiluted essentials oils, and proceeds from this item are donated to organizations working to break the cycle of human trafficking.