Potent germ-killer, Oregano oil comes from the plant Origanum vulgare and has a long history as a natural antibiotic and antiseptic used to fight infection. People in the Middle Ages used oil of oregano to help preserve foods. Oregano oil contains the compound carvacrol which has impressive antiviral, antibacterial, antifungal, and antiparasitic properties.
More fun outside in the summer can mean more risk of sunburns, insect bites, and scrapes. Next to cayenne pepper, tea tree oil is one of the best herbal remedies to have on hand during the summer for emergencies.