Oregano Pure Essential Oil Powerful and pungent, Oregano has been used for centuries as a treasured healing essential oil. Impressively potent, caution should be used when inhaling or diffusing - only 1-2 drops are necessary. Be sure to dilute with a carrier oil when applying directly to skin. Unlock the power of nature to promote balance and relaxation throughout your day. Oregano Pure Essential Oil is a must-have for any home.