SPEARMINT Greenleaf Essential Oil Part of the mint family, Greenleaf Essentials Peppermint Essential Oil is extracted through steam distillation. The result is a refreshingly sweet composition that is sparkling and energizing. Add a few drops of Spearmint Essential Oil to your Ultrasonic Water Diffuser for a minty fresh scent! 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.